diff --git a/src/mesa/swrast/s_renderbuffer.c b/src/mesa/swrast/s_renderbuffer.c new file mode 100644 index 00000000000..988b06fb427 --- /dev/null +++ b/src/mesa/swrast/s_renderbuffer.c @@ -0,0 +1,2222 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * Functions for allocating/managing renderbuffers. + * Also, routines for reading/writing software-based renderbuffer data as + * ubytes, ushorts, uints, etc. + * + * Down the road we'll use this for run-time support of 8, 16 and 32-bit + * color channels. For example, Mesa may use 32-bit/float color channels + * internally (swrast) and use wrapper renderbuffers to convert 32-bit + * values down to 16 or 8-bit values for whatever kind of framebuffer we have. + */ + + +#include "glheader.h" +#include "imports.h" +#include "context.h" +#include "fbobject.h" +#include "formats.h" +#include "mtypes.h" +#include "renderbuffer.h" + + +/* + * Routines for get/put values in common buffer formats follow. + */ + +/* Returns a bytes per pixel of the DataType in the get/put span + * functions for at least a subset of the available combinations a + * renderbuffer can have. + * + * It would be nice to see gl_renderbuffer start talking about a + * gl_format instead of a GLenum DataType. + */ +static int +get_datatype_bytes(struct gl_renderbuffer *rb) +{ + int component_size; + + switch (rb->DataType) { + case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: + component_size = 8; + break; + case GL_FLOAT: + case GL_UNSIGNED_INT: + case GL_UNSIGNED_INT_24_8_EXT: + component_size = 4; + break; + case GL_UNSIGNED_SHORT: + component_size = 2; + break; + case GL_UNSIGNED_BYTE: + component_size = 1; + break; + default: + component_size = 1; + assert(0); + } + + switch (rb->_BaseFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_STENCIL: + return component_size; + default: + return 4 * component_size; + } +} + +/* This is commonly used by most of the accessors. */ +static void * +get_pointer_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLint x, GLint y) +{ + if (!rb->Data) + return NULL; + + return ((char *) rb->Data + + (y * rb->RowStride + x) * _mesa_get_format_bytes(rb->Format)); +} + +/* GetRow() implementation for formats where DataType matches the rb->Format. + */ +static void +get_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + void *src = rb->GetPointer(ctx, rb, x, y); + memcpy(values, src, count * _mesa_get_format_bytes(rb->Format)); +} + +/* Only used for float textures currently, but might also be used for + * RGBA8888, RGBA16, etc. + */ +static void +get_values_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], void *values) +{ + int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat); + GLuint i; + + for (i = 0; i < count; i++) { + const void *src = rb->GetPointer(ctx, rb, x[i], y[i]); + char *dst = (char *) values + i * format_bytes; + memcpy(dst, src, format_bytes); + } +} + +/* For the GL_RED/GL_RG/GL_RGB format/DataType combinations (and + * GL_LUMINANCE/GL_INTENSITY?), the Put functions are a matter of + * storing those initial components of the value per pixel into the + * destination. + */ +static void +put_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, + const void *values, const GLubyte *mask) +{ + void *row = rb->GetPointer(ctx, rb, x, y); + int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat); + int datatype_bytes = get_datatype_bytes(rb); + unsigned int i; + + if (mask) { + for (i = 0; i < count; i++) { + char *dst = (char *) row + i * format_bytes; + const char *src = (const char *) values + i * datatype_bytes; + + if (mask[i]) { + memcpy(dst, src, format_bytes); + } + } + } + else { + for (i = 0; i < count; i++) { + char *dst = (char *) row + i * format_bytes; + const char *src = (const char *) values + i * datatype_bytes; + memcpy(dst, src, format_bytes); + } + } +} + +static void +put_mono_row_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, + const void *value, const GLubyte *mask) +{ + void *row = rb->GetPointer(ctx, rb, x, y); + int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat); + unsigned int i; + + if (mask) { + for (i = 0; i < count; i++) { + char *dst = (char *) row + i * format_bytes; + if (mask[i]) { + memcpy(dst, value, format_bytes); + } + } + } + else { + for (i = 0; i < count; i++) { + char *dst = (char *) row + i * format_bytes; + memcpy(dst, value, format_bytes); + } + } +} + + +static void +put_values_generic(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *values, const GLubyte *mask) +{ + int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat); + int datatype_bytes = get_datatype_bytes(rb); + unsigned int i; + + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + void *dst = rb->GetPointer(ctx, rb, x[i], y[i]); + const char *src = (const char *) values + i * datatype_bytes; + memcpy(dst, src, format_bytes); + } + } +} + + +static void +put_mono_values_generic(struct gl_context *ctx, + struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + int format_bytes = _mesa_get_format_bytes(rb->Format) / sizeof(GLfloat); + unsigned int i; + + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + void *dst = rb->GetPointer(ctx, rb, x[i], y[i]); + memcpy(dst, value, format_bytes); + } + } +} + +/********************************************************************** + * Functions for buffers of 1 X GLubyte values. + * Typically stencil. + */ + +static void +get_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLubyte *dst = (GLubyte *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + const GLubyte *src = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i]; + dst[i] = *src; + } +} + + +static void +put_row_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const GLubyte *src = (const GLubyte *) values; + GLubyte *dst = (GLubyte *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[i]; + } + } + } + else { + memcpy(dst, values, count * sizeof(GLubyte)); + } +} + + +static void +put_mono_row_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + const GLubyte val = *((const GLubyte *) value); + GLubyte *dst = (GLubyte *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = val; + } + } + } + else { + GLuint i; + for (i = 0; i < count; i++) { + dst[i] = val; + } + } +} + + +static void +put_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], + const void *values, const GLubyte *mask) +{ + const GLubyte *src = (const GLubyte *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLubyte *dst = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = src[i]; + } + } +} + + +static void +put_mono_values_ubyte(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + const GLubyte val = *((const GLubyte *) value); + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLubyte *dst = (GLubyte *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = val; + } + } +} + + +/********************************************************************** + * Functions for buffers of 1 X GLushort values. + * Typically depth/Z. + */ + +static void +get_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLushort *dst = (GLushort *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + for (i = 0; i < count; i++) { + const GLushort *src = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i]; + dst[i] = *src; + } +} + + +static void +put_row_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const GLushort *src = (const GLushort *) values; + GLushort *dst = (GLushort *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[i]; + } + } + } + else { + memcpy(dst, src, count * sizeof(GLushort)); + } +} + + +static void +put_mono_row_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + const GLushort val = *((const GLushort *) value); + GLushort *dst = (GLushort *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = val; + } + } + } + else { + GLuint i; + for (i = 0; i < count; i++) { + dst[i] = val; + } + } +} + + +static void +put_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + const GLushort *src = (const GLushort *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = src[i]; + } + } +} + + +static void +put_mono_values_ushort(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + const GLushort val = *((const GLushort *) value); + ASSERT(rb->DataType == GL_UNSIGNED_SHORT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = val; + } + } + } + else { + GLuint i; + for (i = 0; i < count; i++) { + GLushort *dst = (GLushort *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = val; + } + } +} + + +/********************************************************************** + * Functions for buffers of 1 X GLuint values. + * Typically depth/Z or color index. + */ + +static void +get_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLuint *dst = (GLuint *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_INT || + rb->DataType == GL_UNSIGNED_INT_24_8_EXT); + for (i = 0; i < count; i++) { + const GLuint *src = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i]; + dst[i] = *src; + } +} + + +static void +put_row_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const GLuint *src = (const GLuint *) values; + GLuint *dst = (GLuint *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_INT || + rb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[i]; + } + } + } + else { + memcpy(dst, src, count * sizeof(GLuint)); + } +} + + +static void +put_mono_row_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + const GLuint val = *((const GLuint *) value); + GLuint *dst = (GLuint *) rb->Data + y * rb->RowStride + x; + ASSERT(rb->DataType == GL_UNSIGNED_INT || + rb->DataType == GL_UNSIGNED_INT_24_8_EXT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = val; + } + } + } + else { + GLuint i; + for (i = 0; i < count; i++) { + dst[i] = val; + } + } +} + + +static void +put_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + const GLuint *src = (const GLuint *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_INT || + rb->DataType == GL_UNSIGNED_INT_24_8_EXT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = src[i]; + } + } +} + + +static void +put_mono_values_uint(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *value, + const GLubyte *mask) +{ + const GLuint val = *((const GLuint *) value); + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_INT || + rb->DataType == GL_UNSIGNED_INT_24_8_EXT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) rb->Data + y[i] * rb->RowStride + x[i]; + *dst = val; + } + } +} + + +/********************************************************************** + * Functions for buffers of 3 X GLubyte (or GLbyte) values. + * Typically color buffers. + * NOTE: the incoming and outgoing colors are RGBA! We ignore incoming + * alpha values and return 255 for outgoing alpha values. + */ + +static void * +get_pointer_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLint x, GLint y) +{ + ASSERT(rb->Format == MESA_FORMAT_RGB888); + /* No direct access since this buffer is RGB but caller will be + * treating it as if it were RGBA. + */ + return NULL; +} + + +static void +get_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const GLubyte *src = ((const GLubyte *) rb->Data) + + 3 * (y * rb->RowStride + x); + GLubyte *dst = (GLubyte *) values; + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + dst[i * 4 + 0] = src[i * 3 + 0]; + dst[i * 4 + 1] = src[i * 3 + 1]; + dst[i * 4 + 2] = src[i * 3 + 2]; + dst[i * 4 + 3] = 255; + } +} + + +static void +get_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLubyte *dst = (GLubyte *) values; + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + const GLubyte *src + = (GLubyte *) rb->Data + 3 * (y[i] * rb->RowStride + x[i]); + dst[i * 4 + 0] = src[0]; + dst[i * 4 + 1] = src[1]; + dst[i * 4 + 2] = src[2]; + dst[i * 4 + 3] = 255; + } +} + + +static void +put_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + /* note: incoming values are RGB+A! */ + const GLubyte *src = (const GLubyte *) values; + GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x); + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i * 3 + 0] = src[i * 4 + 0]; + dst[i * 3 + 1] = src[i * 4 + 1]; + dst[i * 3 + 2] = src[i * 4 + 2]; + } + } +} + + +static void +put_row_rgb_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + /* note: incoming values are RGB+A! */ + const GLubyte *src = (const GLubyte *) values; + GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x); + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i * 3 + 0] = src[i * 3 + 0]; + dst[i * 3 + 1] = src[i * 3 + 1]; + dst[i * 3 + 2] = src[i * 3 + 2]; + } + } +} + + +static void +put_mono_row_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + /* note: incoming value is RGB+A! */ + const GLubyte val0 = ((const GLubyte *) value)[0]; + const GLubyte val1 = ((const GLubyte *) value)[1]; + const GLubyte val2 = ((const GLubyte *) value)[2]; + GLubyte *dst = (GLubyte *) rb->Data + 3 * (y * rb->RowStride + x); + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + if (!mask && val0 == val1 && val1 == val2) { + /* optimized case */ + memset(dst, val0, 3 * count); + } + else { + GLuint i; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i * 3 + 0] = val0; + dst[i * 3 + 1] = val1; + dst[i * 3 + 2] = val2; + } + } + } +} + + +static void +put_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + /* note: incoming values are RGB+A! */ + const GLubyte *src = (const GLubyte *) values; + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLubyte *dst = (GLubyte *) rb->Data + 3 * (y[i] * rb->RowStride + x[i]); + dst[0] = src[i * 4 + 0]; + dst[1] = src[i * 4 + 1]; + dst[2] = src[i * 4 + 2]; + } + } +} + + +static void +put_mono_values_ubyte3(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + /* note: incoming value is RGB+A! */ + const GLubyte val0 = ((const GLubyte *) value)[0]; + const GLubyte val1 = ((const GLubyte *) value)[1]; + const GLubyte val2 = ((const GLubyte *) value)[2]; + GLuint i; + ASSERT(rb->Format == MESA_FORMAT_RGB888); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLubyte *dst = ((GLubyte *) rb->Data) + + 3 * (y[i] * rb->RowStride + x[i]); + dst[0] = val0; + dst[1] = val1; + dst[2] = val2; + } + } +} + + +/********************************************************************** + * Functions for buffers of 4 X GLubyte (or GLbyte) values. + * Typically color buffers. + */ + +static void +get_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + /* treat 4*GLubyte as 1*GLuint */ + GLuint *dst = (GLuint *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + for (i = 0; i < count; i++) { + const GLuint *src = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]); + dst[i] = *src; + } +} + + +static void +put_row_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + /* treat 4*GLubyte as 1*GLuint */ + const GLuint *src = (const GLuint *) values; + GLuint *dst = (GLuint *) rb->Data + (y * rb->RowStride + x); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[i]; + } + } + } + else { + memcpy(dst, src, 4 * count * sizeof(GLubyte)); + } +} + + +static void +put_row_rgb_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + /* Store RGB values in RGBA buffer */ + const GLubyte *src = (const GLubyte *) values; + GLubyte *dst = (GLubyte *) rb->Data + 4 * (y * rb->RowStride + x); + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i * 4 + 0] = src[i * 3 + 0]; + dst[i * 4 + 1] = src[i * 3 + 1]; + dst[i * 4 + 2] = src[i * 3 + 2]; + dst[i * 4 + 3] = 0xff; + } + } +} + + +static void +put_mono_row_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + /* treat 4*GLubyte as 1*GLuint */ + const GLuint val = *((const GLuint *) value); + GLuint *dst = (GLuint *) rb->Data + (y * rb->RowStride + x); + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + if (!mask && val == 0) { + /* common case */ + memset(dst, 0, count * 4 * sizeof(GLubyte)); + } + else { + /* general case */ + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = val; + } + } + } + else { + GLuint i; + for (i = 0; i < count; i++) { + dst[i] = val; + } + } + } +} + + +static void +put_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + /* treat 4*GLubyte as 1*GLuint */ + const GLuint *src = (const GLuint *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]); + *dst = src[i]; + } + } +} + + +static void +put_mono_values_ubyte4(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + /* treat 4*GLubyte as 1*GLuint */ + const GLuint val = *((const GLuint *) value); + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); + ASSERT(rb->Format == MESA_FORMAT_RGBA8888 || + rb->Format == MESA_FORMAT_RGBA8888_REV); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLuint *dst = (GLuint *) rb->Data + (y[i] * rb->RowStride + x[i]); + *dst = val; + } + } +} + + +/********************************************************************** + * Functions for buffers of 4 X GLushort (or GLshort) values. + * Typically accum buffer. + */ + +static void +get_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLushort *dst = (GLushort *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + for (i = 0; i < count; i++) { + const GLushort *src + = (GLushort *) rb->Data + 4 * (y[i] * rb->RowStride + x[i]); + dst[i] = *src; + } +} + + +static void +put_row_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + const GLushort *src = (const GLushort *) values; + GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x); + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i * 4 + 0] = src[i * 4 + 0]; + dst[i * 4 + 1] = src[i * 4 + 1]; + dst[i * 4 + 2] = src[i * 4 + 2]; + dst[i * 4 + 3] = src[i * 4 + 3]; + } + } + } + else { + memcpy(dst, src, 4 * count * sizeof(GLushort)); + } +} + + +static void +put_row_rgb_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask) +{ + /* Put RGB values in RGBA buffer */ + const GLushort *src = (const GLushort *) values; + GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x); + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + if (mask) { + GLuint i; + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i * 4 + 0] = src[i * 3 + 0]; + dst[i * 4 + 1] = src[i * 3 + 1]; + dst[i * 4 + 2] = src[i * 3 + 2]; + dst[i * 4 + 3] = 0xffff; + } + } + } + else { + memcpy(dst, src, 4 * count * sizeof(GLushort)); + } +} + + +static void +put_mono_row_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask) +{ + const GLushort val0 = ((const GLushort *) value)[0]; + const GLushort val1 = ((const GLushort *) value)[1]; + const GLushort val2 = ((const GLushort *) value)[2]; + const GLushort val3 = ((const GLushort *) value)[3]; + GLushort *dst = (GLushort *) rb->Data + 4 * (y * rb->RowStride + x); + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + if (!mask && val0 == 0 && val1 == 0 && val2 == 0 && val3 == 0) { + /* common case for clearing accum buffer */ + memset(dst, 0, count * 4 * sizeof(GLushort)); + } + else { + GLuint i; + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + dst[i * 4 + 0] = val0; + dst[i * 4 + 1] = val1; + dst[i * 4 + 2] = val2; + dst[i * 4 + 3] = val3; + } + } + } +} + + +static void +put_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask) +{ + const GLushort *src = (const GLushort *) values; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLushort *dst = + ((GLushort *) rb->Data) + 4 * (y[i] * rb->RowStride + x[i]); + dst[0] = src[i * 4 + 0]; + dst[1] = src[i * 4 + 1]; + dst[2] = src[i * 4 + 2]; + dst[3] = src[i * 4 + 3]; + } + } +} + + +static void +put_mono_values_ushort4(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + const GLushort val0 = ((const GLushort *) value)[0]; + const GLushort val1 = ((const GLushort *) value)[1]; + const GLushort val2 = ((const GLushort *) value)[2]; + const GLushort val3 = ((const GLushort *) value)[3]; + GLuint i; + ASSERT(rb->DataType == GL_UNSIGNED_SHORT || rb->DataType == GL_SHORT); + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + GLushort *dst = ((GLushort *) rb->Data) + + 4 * (y[i] * rb->RowStride + x[i]); + dst[0] = val0; + dst[1] = val1; + dst[2] = val2; + dst[3] = val3; + } + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_R8. + */ +static void +get_row_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const GLubyte *src = rb->GetPointer(ctx, rb, x, y); + GLuint *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i] = 0xff000000 | src[i]; + } +} + +static void +get_values_r8(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLuint *dst = (GLuint *) values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLubyte *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i] = 0xff000000 | *src; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_GR88. + */ +static void +get_row_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const GLushort *src = rb->GetPointer(ctx, rb, x, y); + GLuint *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i] = 0xff000000 | src[i]; + } +} + +static void +get_values_rg88(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], void *values) +{ + GLuint *dst = (GLuint *) values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i] = 0xff000000 | *src; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_R16. + */ +static void +get_row_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const GLushort *src = rb->GetPointer(ctx, rb, x, y); + GLushort *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = src[i]; + dst[i * 4 + GCOMP] = 0; + dst[i * 4 + BCOMP] = 0; + dst[i * 4 + ACOMP] = 0xffff; + } +} + +static void +get_values_r16(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values) +{ + GLushort *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLushort *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = *src; + dst[i * 4 + GCOMP] = 0; + dst[i * 4 + BCOMP] = 0; + dst[i * 4 + ACOMP] = 0xffff; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_RG1616. + */ +static void +get_row_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values) +{ + const GLushort *src = rb->GetPointer(ctx, rb, x, y); + GLushort *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = src[i * 2]; + dst[i * 4 + GCOMP] = src[i * 2 + 1]; + dst[i * 4 + BCOMP] = 0; + dst[i * 4 + ACOMP] = 0xffff; + } +} + +static void +get_values_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], void *values) +{ + GLushort *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLshort *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = src[0]; + dst[i * 4 + GCOMP] = src[1]; + dst[i * 4 + BCOMP] = 0; + dst[i * 4 + ACOMP] = 0xffff; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_INTENSITY_FLOAT32. + */ +static void +get_row_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + const GLfloat *src = rb->GetPointer(ctx, rb, x, y); + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = + dst[i * 4 + GCOMP] = + dst[i * 4 + BCOMP] = + dst[i * 4 + ACOMP] = src[i]; + } +} + +static void +get_values_i_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + void *values) +{ + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = + dst[i * 4 + GCOMP] = + dst[i * 4 + BCOMP] = + dst[i * 4 + ACOMP] = src[0]; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_LUMINANCE_FLOAT32. + */ +static void +get_row_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + const GLfloat *src = rb->GetPointer(ctx, rb, x, y); + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = + dst[i * 4 + GCOMP] = + dst[i * 4 + BCOMP] = src[i]; + dst[i * 4 + ACOMP] = 1.0; + } +} + +static void +get_values_l_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + void *values) +{ + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = + dst[i * 4 + GCOMP] = + dst[i * 4 + BCOMP] = src[0]; + dst[i * 4 + ACOMP] = 1.0; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_ALPHA_FLOAT32. + */ +static void +get_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + const GLfloat *src = rb->GetPointer(ctx, rb, x, y); + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = 0.0; + dst[i * 4 + GCOMP] = 0.0; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = src[i]; + } +} + +static void +get_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + void *values) +{ + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = 0.0; + dst[i * 4 + GCOMP] = 0.0; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = src[0]; + } +} + +static void +put_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, + const void *values, const GLubyte *mask) +{ + float *dst = rb->GetPointer(ctx, rb, x, y); + const float *src = values; + unsigned int i; + + if (mask) { + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[i * 4 + ACOMP]; + } + } + } + else { + for (i = 0; i < count; i++) { + dst[i] = src[i * 4 + ACOMP]; + } + } +} + +static void +put_mono_row_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, + const void *value, const GLubyte *mask) +{ + float *dst = rb->GetPointer(ctx, rb, x, y); + const float *src = value; + unsigned int i; + + if (mask) { + for (i = 0; i < count; i++) { + if (mask[i]) { + dst[i] = src[ACOMP]; + } + } + } + else { + for (i = 0; i < count; i++) { + dst[i] = src[ACOMP]; + } + } +} + +static void +put_values_a_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *values, const GLubyte *mask) +{ + const float *src = values; + unsigned int i; + + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + float *dst = rb->GetPointer(ctx, rb, x[i], y[i]); + + *dst = src[i * 4 + ACOMP]; + } + } +} + +static void +put_mono_values_a_float32(struct gl_context *ctx, + struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask) +{ + const float *src = value; + unsigned int i; + + for (i = 0; i < count; i++) { + if (!mask || mask[i]) { + float *dst = rb->GetPointer(ctx, rb, x[i], y[i]); + *dst = src[ACOMP]; + } + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_R_FLOAT32. + */ +static void +get_row_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + const GLfloat *src = rb->GetPointer(ctx, rb, x, y); + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = src[i]; + dst[i * 4 + GCOMP] = 0.0; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = 1.0; + } +} + +static void +get_values_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + void *values) +{ + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = src[0]; + dst[i * 4 + GCOMP] = 0.0; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = 1.0; + } +} + +/********************************************************************** + * Functions for MESA_FORMAT_RG_FLOAT32. + */ +static void +get_row_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, GLint x, GLint y, void *values) +{ + const GLfloat *src = rb->GetPointer(ctx, rb, x, y); + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + dst[i * 4 + RCOMP] = src[i * 2 + 0]; + dst[i * 4 + GCOMP] = src[i * 2 + 1]; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = 1.0; + } +} + +static void +get_values_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + void *values) +{ + GLfloat *dst = values; + GLuint i; + + for (i = 0; i < count; i++) { + const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]); + dst[i * 4 + RCOMP] = src[0]; + dst[i * 4 + GCOMP] = src[1]; + dst[i * 4 + BCOMP] = 0.0; + dst[i * 4 + ACOMP] = 1.0; + } +} + +/** + * This is the default software fallback for gl_renderbuffer's span + * access functions. + * + * The assumptions are that rb->Data will be a pointer to (0,0), that pixels + * are packed in the type of rb->Format, and that subsequent rows appear + * rb->RowStride pixels later. + */ +void +_mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb) +{ + rb->GetPointer = get_pointer_generic; + rb->GetRow = get_row_generic; + + switch (rb->Format) { + case MESA_FORMAT_RGB888: + rb->DataType = GL_UNSIGNED_BYTE; + rb->GetPointer = get_pointer_ubyte3; + rb->GetRow = get_row_ubyte3; + rb->GetValues = get_values_ubyte3; + rb->PutRow = put_row_ubyte3; + rb->PutRowRGB = put_row_rgb_ubyte3; + rb->PutMonoRow = put_mono_row_ubyte3; + rb->PutValues = put_values_ubyte3; + rb->PutMonoValues = put_mono_values_ubyte3; + break; + + case MESA_FORMAT_RGBA8888: + case MESA_FORMAT_RGBA8888_REV: + rb->DataType = GL_UNSIGNED_BYTE; + rb->GetValues = get_values_ubyte4; + rb->PutRow = put_row_ubyte4; + rb->PutRowRGB = put_row_rgb_ubyte4; + rb->PutMonoRow = put_mono_row_ubyte4; + rb->PutValues = put_values_ubyte4; + rb->PutMonoValues = put_mono_values_ubyte4; + break; + + case MESA_FORMAT_R8: + rb->DataType = GL_UNSIGNED_BYTE; + rb->GetValues = get_values_r8; + rb->GetRow = get_row_r8; + rb->PutRow = put_row_generic; + rb->PutRowRGB = put_row_generic; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_GR88: + rb->DataType = GL_UNSIGNED_BYTE; + rb->GetValues = get_values_rg88; + rb->GetRow = get_row_rg88; + rb->PutRow = put_row_generic; + rb->PutRowRGB = put_row_generic; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_R16: + rb->DataType = GL_UNSIGNED_SHORT; + rb->GetValues = get_values_r16; + rb->GetRow = get_row_r16; + rb->PutRow = put_row_generic; + rb->PutRowRGB = put_row_generic; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_RG1616: + rb->DataType = GL_UNSIGNED_SHORT; + rb->GetValues = get_values_rg1616; + rb->GetRow = get_row_rg1616; + rb->PutRow = put_row_generic; + rb->PutRowRGB = put_row_generic; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_SIGNED_RGBA_16: + rb->DataType = GL_SHORT; + rb->GetValues = get_values_ushort4; + rb->PutRow = put_row_ushort4; + rb->PutRowRGB = put_row_rgb_ushort4; + rb->PutMonoRow = put_mono_row_ushort4; + rb->PutValues = put_values_ushort4; + rb->PutMonoValues = put_mono_values_ushort4; + break; + + case MESA_FORMAT_S8: + rb->DataType = GL_UNSIGNED_BYTE; + rb->GetValues = get_values_ubyte; + rb->PutRow = put_row_ubyte; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_ubyte; + rb->PutValues = put_values_ubyte; + rb->PutMonoValues = put_mono_values_ubyte; + break; + + case MESA_FORMAT_Z16: + rb->DataType = GL_UNSIGNED_SHORT; + rb->GetValues = get_values_ushort; + rb->PutRow = put_row_ushort; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_ushort; + rb->PutValues = put_values_ushort; + rb->PutMonoValues = put_mono_values_ushort; + break; + + case MESA_FORMAT_Z32: + case MESA_FORMAT_X8_Z24: + case MESA_FORMAT_Z24_X8: + rb->DataType = GL_UNSIGNED_INT; + rb->GetValues = get_values_uint; + rb->PutRow = put_row_uint; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_uint; + rb->PutValues = put_values_uint; + rb->PutMonoValues = put_mono_values_uint; + break; + + case MESA_FORMAT_Z24_S8: + case MESA_FORMAT_S8_Z24: + rb->DataType = GL_UNSIGNED_INT_24_8_EXT; + rb->GetValues = get_values_uint; + rb->PutRow = put_row_uint; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_uint; + rb->PutValues = put_values_uint; + rb->PutMonoValues = put_mono_values_uint; + break; + + case MESA_FORMAT_RGBA_FLOAT32: + rb->GetRow = get_row_generic; + rb->GetValues = get_values_generic; + rb->PutRow = put_row_generic; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_INTENSITY_FLOAT32: + rb->GetRow = get_row_i_float32; + rb->GetValues = get_values_i_float32; + rb->PutRow = put_row_generic; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_LUMINANCE_FLOAT32: + rb->GetRow = get_row_l_float32; + rb->GetValues = get_values_l_float32; + rb->PutRow = put_row_generic; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_ALPHA_FLOAT32: + rb->GetRow = get_row_a_float32; + rb->GetValues = get_values_a_float32; + rb->PutRow = put_row_a_float32; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_a_float32; + rb->PutValues = put_values_a_float32; + rb->PutMonoValues = put_mono_values_a_float32; + break; + + case MESA_FORMAT_RG_FLOAT32: + rb->GetRow = get_row_rg_float32; + rb->GetValues = get_values_rg_float32; + rb->PutRow = put_row_generic; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + case MESA_FORMAT_R_FLOAT32: + rb->GetRow = get_row_r_float32; + rb->GetValues = get_values_r_float32; + rb->PutRow = put_row_generic; + rb->PutRowRGB = NULL; + rb->PutMonoRow = put_mono_row_generic; + rb->PutValues = put_values_generic; + rb->PutMonoValues = put_mono_values_generic; + break; + + default: + break; + } +} + +/** + * This is a software fallback for the gl_renderbuffer->AllocStorage + * function. + * Device drivers will typically override this function for the buffers + * which it manages (typically color buffers, Z and stencil). + * Other buffers (like software accumulation and aux buffers) which the driver + * doesn't manage can be handled with this function. + * + * This one multi-purpose function can allocate stencil, depth, accum, color + * or color-index buffers! + * + * This function also plugs in the appropriate GetPointer, Get/PutRow and + * Get/PutValues functions. + */ +static GLboolean +soft_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, + GLuint width, GLuint height) +{ + switch (internalFormat) { + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + rb->Format = MESA_FORMAT_RGB888; + break; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: +#if 1 + case GL_RGB10_A2: + case GL_RGBA12: +#endif + if (_mesa_little_endian()) + rb->Format = MESA_FORMAT_RGBA8888_REV; + else + rb->Format = MESA_FORMAT_RGBA8888; + break; + case GL_RGBA16: + case GL_RGBA16_SNORM: + /* for accum buffer */ + rb->Format = MESA_FORMAT_SIGNED_RGBA_16; + break; + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + rb->Format = MESA_FORMAT_S8; + break; + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + rb->Format = MESA_FORMAT_Z16; + break; + case GL_DEPTH_COMPONENT24: + rb->Format = MESA_FORMAT_X8_Z24; + break; + case GL_DEPTH_COMPONENT32: + rb->Format = MESA_FORMAT_Z32; + break; + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + rb->Format = MESA_FORMAT_Z24_S8; + break; + default: + /* unsupported format */ + return GL_FALSE; + } + + _mesa_set_renderbuffer_accessors(rb); + + ASSERT(rb->DataType); + ASSERT(rb->GetPointer); + ASSERT(rb->GetRow); + ASSERT(rb->GetValues); + ASSERT(rb->PutRow); + ASSERT(rb->PutMonoRow); + ASSERT(rb->PutValues); + ASSERT(rb->PutMonoValues); + + /* free old buffer storage */ + if (rb->Data) { + free(rb->Data); + rb->Data = NULL; + } + + rb->RowStride = width; + + if (width > 0 && height > 0) { + /* allocate new buffer storage */ + rb->Data = malloc(width * height * _mesa_get_format_bytes(rb->Format)); + + if (rb->Data == NULL) { + rb->Width = 0; + rb->Height = 0; + rb->RowStride = 0; + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "software renderbuffer allocation (%d x %d x %d)", + width, height, _mesa_get_format_bytes(rb->Format)); + return GL_FALSE; + } + } + + rb->Width = width; + rb->Height = height; + rb->_BaseFormat = _mesa_base_fbo_format(ctx, internalFormat); + + if (rb->Name == 0 && + internalFormat == GL_RGBA16_SNORM && + rb->_BaseFormat == 0) { + /* NOTE: This is a special case just for accumulation buffers. + * This is a very limited use case- there's no snorm texturing or + * rendering going on. + */ + rb->_BaseFormat = GL_RGBA; + } + else { + /* the internalFormat should have been error checked long ago */ + ASSERT(rb->_BaseFormat); + } + + return GL_TRUE; +} + + +void +_mesa_map_soft_renderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb, + GLuint x, GLuint y, GLuint w, GLuint h, + GLbitfield mode, + GLubyte **out_map, + GLint *out_stride) +{ + GLubyte *map = rb->Data; + int cpp = _mesa_get_format_bytes(rb->Format); + int stride = rb->RowStride * cpp; + + ASSERT(rb->Data); + + map += y * stride; + map += x * cpp; + + *out_map = map; + *out_stride = stride; +} + +void +_mesa_unmap_soft_renderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb) +{ +} + + + +/**********************************************************************/ +/**********************************************************************/ +/**********************************************************************/ + + +/** + * Default GetPointer routine. Always return NULL to indicate that + * direct buffer access is not supported. + */ +static void * +nop_get_pointer(struct gl_context *ctx, struct gl_renderbuffer *rb, GLint x, GLint y) +{ + return NULL; +} + + +/** + * Initialize the fields of a gl_renderbuffer to default values. + */ +void +_mesa_init_renderbuffer(struct gl_renderbuffer *rb, GLuint name) +{ + _glthread_INIT_MUTEX(rb->Mutex); + + rb->ClassID = 0; + rb->Name = name; + rb->RefCount = 0; + rb->Delete = _mesa_delete_renderbuffer; + + /* The rest of these should be set later by the caller of this function or + * the AllocStorage method: + */ + rb->AllocStorage = NULL; + + rb->Width = 0; + rb->Height = 0; + rb->InternalFormat = GL_RGBA; + rb->Format = MESA_FORMAT_NONE; + + rb->DataType = GL_NONE; + rb->Data = NULL; + + /* Point back to ourself so that we don't have to check for Wrapped==NULL + * all over the drivers. + */ + rb->Wrapped = rb; + + rb->GetPointer = nop_get_pointer; + rb->GetRow = NULL; + rb->GetValues = NULL; + rb->PutRow = NULL; + rb->PutRowRGB = NULL; + rb->PutMonoRow = NULL; + rb->PutValues = NULL; + rb->PutMonoValues = NULL; +} + + +/** + * Allocate a new gl_renderbuffer object. This can be used for user-created + * renderbuffers or window-system renderbuffers. + */ +struct gl_renderbuffer * +_mesa_new_renderbuffer(struct gl_context *ctx, GLuint name) +{ + struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer); + if (rb) { + _mesa_init_renderbuffer(rb, name); + } + return rb; +} + + +/** + * Delete a gl_framebuffer. + * This is the default function for renderbuffer->Delete(). + */ +void +_mesa_delete_renderbuffer(struct gl_renderbuffer *rb) +{ + if (rb->Data) { + free(rb->Data); + } + free(rb); +} + + +/** + * Allocate a software-based renderbuffer. This is called via the + * ctx->Driver.NewRenderbuffer() function when the user creates a new + * renderbuffer. + * This would not be used for hardware-based renderbuffers. + */ +struct gl_renderbuffer * +_mesa_new_soft_renderbuffer(struct gl_context *ctx, GLuint name) +{ + struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, name); + if (rb) { + rb->AllocStorage = soft_renderbuffer_storage; + /* Normally, one would setup the PutRow, GetRow, etc functions here. + * But we're doing that in the soft_renderbuffer_storage() function + * instead. + */ + } + return rb; +} + + +/** + * Add software-based color renderbuffers to the given framebuffer. + * This is a helper routine for device drivers when creating a + * window system framebuffer (not a user-created render/framebuffer). + * Once this function is called, you can basically forget about this + * renderbuffer; core Mesa will handle all the buffer management and + * rendering! + */ +static GLboolean +add_color_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb, + GLuint rgbBits, GLuint alphaBits, + GLboolean frontLeft, GLboolean backLeft, + GLboolean frontRight, GLboolean backRight) +{ + gl_buffer_index b; + + if (rgbBits > 16 || alphaBits > 16) { + _mesa_problem(ctx, + "Unsupported bit depth in add_color_renderbuffers"); + return GL_FALSE; + } + + assert(MAX_COLOR_ATTACHMENTS >= 4); + + for (b = BUFFER_FRONT_LEFT; b <= BUFFER_BACK_RIGHT; b++) { + struct gl_renderbuffer *rb; + + if (b == BUFFER_FRONT_LEFT && !frontLeft) + continue; + else if (b == BUFFER_BACK_LEFT && !backLeft) + continue; + else if (b == BUFFER_FRONT_RIGHT && !frontRight) + continue; + else if (b == BUFFER_BACK_RIGHT && !backRight) + continue; + + assert(fb->Attachment[b].Renderbuffer == NULL); + + rb = _mesa_new_renderbuffer(ctx, 0); + if (!rb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating color buffer"); + return GL_FALSE; + } + + rb->InternalFormat = GL_RGBA; + + rb->AllocStorage = soft_renderbuffer_storage; + _mesa_add_renderbuffer(fb, b, rb); + } + + return GL_TRUE; +} + + +/** + * Add a software-based depth renderbuffer to the given framebuffer. + * This is a helper routine for device drivers when creating a + * window system framebuffer (not a user-created render/framebuffer). + * Once this function is called, you can basically forget about this + * renderbuffer; core Mesa will handle all the buffer management and + * rendering! + */ +static GLboolean +add_depth_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb, + GLuint depthBits) +{ + struct gl_renderbuffer *rb; + + if (depthBits > 32) { + _mesa_problem(ctx, + "Unsupported depthBits in add_depth_renderbuffer"); + return GL_FALSE; + } + + assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer == NULL); + + rb = _mesa_new_renderbuffer(ctx, 0); + if (!rb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating depth buffer"); + return GL_FALSE; + } + + if (depthBits <= 16) { + rb->InternalFormat = GL_DEPTH_COMPONENT16; + } + else if (depthBits <= 24) { + rb->InternalFormat = GL_DEPTH_COMPONENT24; + } + else { + rb->InternalFormat = GL_DEPTH_COMPONENT32; + } + + rb->AllocStorage = soft_renderbuffer_storage; + _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb); + + return GL_TRUE; +} + + +/** + * Add a software-based stencil renderbuffer to the given framebuffer. + * This is a helper routine for device drivers when creating a + * window system framebuffer (not a user-created render/framebuffer). + * Once this function is called, you can basically forget about this + * renderbuffer; core Mesa will handle all the buffer management and + * rendering! + */ +static GLboolean +add_stencil_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb, + GLuint stencilBits) +{ + struct gl_renderbuffer *rb; + + if (stencilBits > 16) { + _mesa_problem(ctx, + "Unsupported stencilBits in add_stencil_renderbuffer"); + return GL_FALSE; + } + + assert(fb->Attachment[BUFFER_STENCIL].Renderbuffer == NULL); + + rb = _mesa_new_renderbuffer(ctx, 0); + if (!rb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating stencil buffer"); + return GL_FALSE; + } + + assert(stencilBits <= 8); + rb->InternalFormat = GL_STENCIL_INDEX8; + + rb->AllocStorage = soft_renderbuffer_storage; + _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb); + + return GL_TRUE; +} + + +/** + * Add a software-based accumulation renderbuffer to the given framebuffer. + * This is a helper routine for device drivers when creating a + * window system framebuffer (not a user-created render/framebuffer). + * Once this function is called, you can basically forget about this + * renderbuffer; core Mesa will handle all the buffer management and + * rendering! + */ +static GLboolean +add_accum_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb, + GLuint redBits, GLuint greenBits, + GLuint blueBits, GLuint alphaBits) +{ + struct gl_renderbuffer *rb; + + if (redBits > 16 || greenBits > 16 || blueBits > 16 || alphaBits > 16) { + _mesa_problem(ctx, + "Unsupported accumBits in add_accum_renderbuffer"); + return GL_FALSE; + } + + assert(fb->Attachment[BUFFER_ACCUM].Renderbuffer == NULL); + + rb = _mesa_new_renderbuffer(ctx, 0); + if (!rb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating accum buffer"); + return GL_FALSE; + } + + rb->InternalFormat = GL_RGBA16_SNORM; + rb->AllocStorage = soft_renderbuffer_storage; + _mesa_add_renderbuffer(fb, BUFFER_ACCUM, rb); + + return GL_TRUE; +} + + + +/** + * Add a software-based aux renderbuffer to the given framebuffer. + * This is a helper routine for device drivers when creating a + * window system framebuffer (not a user-created render/framebuffer). + * Once this function is called, you can basically forget about this + * renderbuffer; core Mesa will handle all the buffer management and + * rendering! + * + * NOTE: color-index aux buffers not supported. + */ +static GLboolean +add_aux_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb, + GLuint colorBits, GLuint numBuffers) +{ + GLuint i; + + if (colorBits > 16) { + _mesa_problem(ctx, + "Unsupported colorBits in add_aux_renderbuffers"); + return GL_FALSE; + } + + assert(numBuffers <= MAX_AUX_BUFFERS); + + for (i = 0; i < numBuffers; i++) { + struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, 0); + + assert(fb->Attachment[BUFFER_AUX0 + i].Renderbuffer == NULL); + + if (!rb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating aux buffer"); + return GL_FALSE; + } + + assert (colorBits <= 8); + rb->InternalFormat = GL_RGBA; + + rb->AllocStorage = soft_renderbuffer_storage; + _mesa_add_renderbuffer(fb, BUFFER_AUX0 + i, rb); + } + return GL_TRUE; +} + + +/** + * Create/attach software-based renderbuffers to the given framebuffer. + * This is a helper routine for device drivers. Drivers can just as well + * call the individual _mesa_add_*_renderbuffer() routines directly. + */ +void +_mesa_add_soft_renderbuffers(struct gl_framebuffer *fb, + GLboolean color, + GLboolean depth, + GLboolean stencil, + GLboolean accum, + GLboolean alpha, + GLboolean aux) +{ + GLboolean frontLeft = GL_TRUE; + GLboolean backLeft = fb->Visual.doubleBufferMode; + GLboolean frontRight = fb->Visual.stereoMode; + GLboolean backRight = fb->Visual.stereoMode && fb->Visual.doubleBufferMode; + + if (color) { + assert(fb->Visual.redBits == fb->Visual.greenBits); + assert(fb->Visual.redBits == fb->Visual.blueBits); + add_color_renderbuffers(NULL, fb, + fb->Visual.redBits, + fb->Visual.alphaBits, + frontLeft, backLeft, + frontRight, backRight); + } + + if (depth) { + assert(fb->Visual.depthBits > 0); + add_depth_renderbuffer(NULL, fb, fb->Visual.depthBits); + } + + if (stencil) { + assert(fb->Visual.stencilBits > 0); + add_stencil_renderbuffer(NULL, fb, fb->Visual.stencilBits); + } + + if (accum) { + assert(fb->Visual.accumRedBits > 0); + assert(fb->Visual.accumGreenBits > 0); + assert(fb->Visual.accumBlueBits > 0); + add_accum_renderbuffer(NULL, fb, + fb->Visual.accumRedBits, + fb->Visual.accumGreenBits, + fb->Visual.accumBlueBits, + fb->Visual.accumAlphaBits); + } + + if (aux) { + assert(fb->Visual.numAuxBuffers > 0); + add_aux_renderbuffers(NULL, fb, fb->Visual.redBits, + fb->Visual.numAuxBuffers); + } + +#if 0 + if (multisample) { + /* maybe someday */ + } +#endif +} + + +/** + * Attach a renderbuffer to a framebuffer. + * \param bufferName one of the BUFFER_x tokens + */ +void +_mesa_add_renderbuffer(struct gl_framebuffer *fb, + gl_buffer_index bufferName, struct gl_renderbuffer *rb) +{ + assert(fb); + assert(rb); + assert(bufferName < BUFFER_COUNT); + + /* There should be no previous renderbuffer on this attachment point, + * with the exception of depth/stencil since the same renderbuffer may + * be used for both. + */ + assert(bufferName == BUFFER_DEPTH || + bufferName == BUFFER_STENCIL || + fb->Attachment[bufferName].Renderbuffer == NULL); + + /* winsys vs. user-created buffer cross check */ + if (fb->Name) { + assert(rb->Name); + } + else { + assert(!rb->Name); + } + + fb->Attachment[bufferName].Type = GL_RENDERBUFFER_EXT; + fb->Attachment[bufferName].Complete = GL_TRUE; + _mesa_reference_renderbuffer(&fb->Attachment[bufferName].Renderbuffer, rb); +} + + +/** + * Remove the named renderbuffer from the given framebuffer. + * \param bufferName one of the BUFFER_x tokens + */ +void +_mesa_remove_renderbuffer(struct gl_framebuffer *fb, + gl_buffer_index bufferName) +{ + struct gl_renderbuffer *rb; + + assert(bufferName < BUFFER_COUNT); + + rb = fb->Attachment[bufferName].Renderbuffer; + if (!rb) + return; + + _mesa_reference_renderbuffer(&rb, NULL); + + fb->Attachment[bufferName].Renderbuffer = NULL; +} + + +/** + * Set *ptr to point to rb. If *ptr points to another renderbuffer, + * dereference that buffer first. The new renderbuffer's refcount will + * be incremented. The old renderbuffer's refcount will be decremented. + * This is normally only called from the _mesa_reference_renderbuffer() macro + * when there's a real pointer change. + */ +void +_mesa_reference_renderbuffer_(struct gl_renderbuffer **ptr, + struct gl_renderbuffer *rb) +{ + if (*ptr) { + /* Unreference the old renderbuffer */ + GLboolean deleteFlag = GL_FALSE; + struct gl_renderbuffer *oldRb = *ptr; + + _glthread_LOCK_MUTEX(oldRb->Mutex); + ASSERT(oldRb->RefCount > 0); + oldRb->RefCount--; + /*printf("RB DECR %p (%d) to %d\n", (void*) oldRb, oldRb->Name, oldRb->RefCount);*/ + deleteFlag = (oldRb->RefCount == 0); + _glthread_UNLOCK_MUTEX(oldRb->Mutex); + + if (deleteFlag) { + oldRb->Delete(oldRb); + } + + *ptr = NULL; + } + assert(!*ptr); + + if (rb) { + /* reference new renderbuffer */ + _glthread_LOCK_MUTEX(rb->Mutex); + rb->RefCount++; + /*printf("RB INCR %p (%d) to %d\n", (void*) rb, rb->Name, rb->RefCount);*/ + _glthread_UNLOCK_MUTEX(rb->Mutex); + *ptr = rb; + } +} diff --git a/src/mesa/swrast/s_renderbuffer.h b/src/mesa/swrast/s_renderbuffer.h new file mode 100644 index 00000000000..7b7484c8bf3 --- /dev/null +++ b/src/mesa/swrast/s_renderbuffer.h @@ -0,0 +1,96 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#ifndef RENDERBUFFER_H +#define RENDERBUFFER_H + +#include "glheader.h" +#include "mtypes.h" + +struct gl_context; +struct gl_framebuffer; +struct gl_renderbuffer; + +extern void +_mesa_init_renderbuffer(struct gl_renderbuffer *rb, GLuint name); + +extern struct gl_renderbuffer * +_mesa_new_renderbuffer(struct gl_context *ctx, GLuint name); + +extern void +_mesa_delete_renderbuffer(struct gl_renderbuffer *rb); + + +extern struct gl_renderbuffer * +_mesa_new_soft_renderbuffer(struct gl_context *ctx, GLuint name); + +void +_mesa_map_soft_renderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb, + GLuint x, GLuint y, GLuint w, GLuint h, + GLbitfield mode, + GLubyte **out_map, + GLint *out_stride); + +void +_mesa_unmap_soft_renderbuffer(struct gl_context *ctx, + struct gl_renderbuffer *rb); + +extern void +_mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb); + + +extern void +_mesa_add_soft_renderbuffers(struct gl_framebuffer *fb, + GLboolean color, + GLboolean depth, + GLboolean stencil, + GLboolean accum, + GLboolean alpha, + GLboolean aux); + +extern void +_mesa_add_renderbuffer(struct gl_framebuffer *fb, + gl_buffer_index bufferName, struct gl_renderbuffer *rb); + +extern void +_mesa_remove_renderbuffer(struct gl_framebuffer *fb, + gl_buffer_index bufferName); + +extern void +_mesa_reference_renderbuffer_(struct gl_renderbuffer **ptr, + struct gl_renderbuffer *rb); + +static inline void +_mesa_reference_renderbuffer(struct gl_renderbuffer **ptr, + struct gl_renderbuffer *rb) +{ + if (*ptr != rb) + _mesa_reference_renderbuffer_(ptr, rb); +} + + + +#endif /* RENDERBUFFER_H */