Add a new function, driFillInModes, that is to be used by drivers to
create the set of support __GLcontextModes. This should replace the current driver-specific fill_in_modes functions.
This commit is contained in:
Ian Romanick
parent
173bc32195
commit
7439605697
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* (c) Copyright IBM Corporation 2002
|
||||
* (C) Copyright IBM Corporation 2002, 2004
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
|
|
@ -297,3 +297,239 @@ GLboolean driClipRectToFramebuffer( const GLframebuffer *buffer,
|
|||
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Creates a set of \c __GLcontextModes that a driver will expose.
|
||||
*
|
||||
* A set of \c __GLcontextModes will be created based on the supplied
|
||||
* parameters. The number of modes processed will be 2 *
|
||||
* \c num_depth_stencil_bits * \c num_db_modes.
|
||||
*
|
||||
* For the most part, data is just copied from \c depth_bits, \c stencil_bits,
|
||||
* \c db_modes, and \c visType into each \c __GLcontextModes element.
|
||||
* However, the meanings of \c fb_format and \c fb_type require further
|
||||
* explanation. The \c fb_format specifies which color components are in
|
||||
* each pixel and what the default order is. For example, \c GL_RGB specifies
|
||||
* that red, green, blue are available and red is in the "most significant"
|
||||
* position and blue is in the "least significant". The \c fb_type specifies
|
||||
* the bit sizes of each component and the actual ordering. For example, if
|
||||
* \c GL_UNSIGNED_SHORT_5_6_5_REV is specified with \c GL_RGB, bits [15:11]
|
||||
* are the blue value, bits [10:5] are the green value, and bits [4:0] are
|
||||
* the red value.
|
||||
*
|
||||
* One sublte issue is the combination of \c GL_RGB or \c GL_BGR and either
|
||||
* of the \c GL_UNSIGNED_INT_8_8_8_8 modes. The resulting mask values in the
|
||||
* \c __GLcontextModes structure is \b identical to the \c GL_RGBA or
|
||||
* \c GL_BGRA case, except the \c alphaMask is zero. This means that, as
|
||||
* far as this routine is concerned, \c GL_RGB with \c GL_UNSIGNED_INT_8_8_8_8
|
||||
* still uses 32-bits.
|
||||
*
|
||||
* If in doubt, look at the tables used in the function.
|
||||
*
|
||||
* \param ptr_to_modes Pointer to a pointer to a linked list of
|
||||
* \c __GLcontextModes. Upon completion, a pointer to
|
||||
* the next element to be process will be stored here.
|
||||
* If the function fails and returns \c GL_FALSE, this
|
||||
* value will be unmodified, but some elements in the
|
||||
* linked list may be modified.
|
||||
* \param fb_format Format of the framebuffer. Currently only \c GL_RGB,
|
||||
* \c GL_RGBA, \c GL_BGR, and \c GL_BGRA are supported.
|
||||
* \param fb_type Type of the pixels in the framebuffer. Currently only
|
||||
* \c GL_UNSIGNED_SHORT_5_6_5,
|
||||
* \c GL_UNSIGNED_SHORT_5_6_5_REV,
|
||||
* \c GL_UNSIGNED_INT_8_8_8_8, and
|
||||
* \c GL_UNSIGNED_INT_8_8_8_8_REV are supported.
|
||||
* \param depth_bits Array of depth buffer sizes to be exposed.
|
||||
* \param stencil_bits Array of stencil buffer sizes to be exposed.
|
||||
* \param num_depth_stencil_bits Number of entries in both \c depth_bits and
|
||||
* \c stencil_bits.
|
||||
* \param db_modes Array of buffer swap modes. If an element has a
|
||||
* value of \c GLX_NONE, then it represents a
|
||||
* single-buffered mode. Other valid values are
|
||||
* \c GLX_SWAP_EXCHANGE_OML, \c GLX_SWAP_COPY_OML, and
|
||||
* \c GLX_SWAP_UNDEFINED_OML. See the
|
||||
* GLX_OML_swap_method extension spec for more details.
|
||||
* \param num_db_modes Number of entries in \c db_modes.
|
||||
* \param visType GLX visual type. Usually either \c GLX_TRUE_COLOR or
|
||||
* \c GLX_DIRECT_COLOR.
|
||||
*
|
||||
* \returns
|
||||
* \c GL_TRUE on success or \c GL_FALSE on failure. Currently the only
|
||||
* cause of failure is a bad parameter (i.e., unsupported \c fb_format or
|
||||
* \c fb_type).
|
||||
*
|
||||
* \todo
|
||||
* There is currently no way to support packed RGB modes (i.e., modes with
|
||||
* exactly 3 bytes per pixel) or floating-point modes. This could probably
|
||||
* be done by creating some new, private enums with clever names likes
|
||||
* \c GL_UNSIGNED_3BYTE_8_8_8, \c GL_4FLOAT_32_32_32_32,
|
||||
* \c GL_4HALF_16_16_16_16, etc. We can cross that bridge when we come to it.
|
||||
*/
|
||||
GLboolean
|
||||
driFillInModes( __GLcontextModes ** ptr_to_modes,
|
||||
GLenum fb_format, GLenum fb_type,
|
||||
const uint8_t * depth_bits, const uint8_t * stencil_bits,
|
||||
unsigned num_depth_stencil_bits,
|
||||
const GLenum * db_modes, unsigned num_db_modes,
|
||||
int visType )
|
||||
{
|
||||
static const uint8_t bits_table[3][4] = {
|
||||
/* R G B A */
|
||||
{ 5, 6, 5, 0 }, /* Any GL_UNSIGNED_SHORT_5_6_5 */
|
||||
{ 8, 8, 8, 0 }, /* Any RGB with any GL_UNSIGNED_INT_8_8_8_8 */
|
||||
{ 8, 8, 8, 8 } /* Any RGBA with any GL_UNSIGNED_INT_8_8_8_8 */
|
||||
};
|
||||
|
||||
/* The following arrays are all indexed by the fb_type masked with 0x07.
|
||||
* Given the four supported fb_type values, this results in valid array
|
||||
* indices of 3, 4, 5, and 7.
|
||||
*/
|
||||
static const uint32_t masks_table_rgb[8][4] = {
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x000000F8, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
|
||||
{ 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
|
||||
{ 0xFF000000, 0x00FF0000, 0x0000FF00, 0x00000000 }, /* 8_8_8_8 */
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0x00000000 } /* 8_8_8_8_REV */
|
||||
};
|
||||
|
||||
static const uint32_t masks_table_rgba[8][4] = {
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x000000F8, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5 */
|
||||
{ 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5_REV */
|
||||
{ 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF }, /* 8_8_8_8 */
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 }, /* 8_8_8_8_REV */
|
||||
};
|
||||
|
||||
static const uint32_t masks_table_bgr[8][4] = {
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
|
||||
{ 0x000000F8, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
|
||||
{ 0x0000FF00, 0x00FF0000, 0xFF000000, 0x00000000 }, /* 8_8_8_8 */
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0x00000000 }, /* 8_8_8_8_REV */
|
||||
};
|
||||
|
||||
static const uint32_t masks_table_bgra[8][4] = {
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x0000001F, 0x000007E0, 0x0000F800, 0x00000000 }, /* 5_6_5 */
|
||||
{ 0x000000F8, 0x000007E0, 0x0000001F, 0x00000000 }, /* 5_6_5_REV */
|
||||
{ 0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF }, /* 8_8_8_8 */
|
||||
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000 },
|
||||
{ 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000 }, /* 8_8_8_8_REV */
|
||||
};
|
||||
|
||||
static const uint8_t bytes_per_pixel[8] = {
|
||||
0, 0, 0, 2, 2, 4, 0, 4
|
||||
};
|
||||
|
||||
const uint8_t * bits;
|
||||
const uint32_t * masks;
|
||||
const int index = fb_type & 0x07;
|
||||
__GLcontextModes * modes = *ptr_to_modes;
|
||||
unsigned i;
|
||||
unsigned j;
|
||||
unsigned k;
|
||||
|
||||
|
||||
if ( bytes_per_pixel[ index ] == 0 ) {
|
||||
fprintf( stderr, "[%s:%u] Framebuffer type 0x%04x has 0 bytes per pixel.\n",
|
||||
__func__, __LINE__, fb_type );
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
/* Valid types are GL_UNSIGNED_SHORT_5_6_5 and GL_UNSIGNED_INT_8_8_8_8 and
|
||||
* the _REV versions.
|
||||
*
|
||||
* Valid formats are GL_RGBA, GL_RGB, and GL_BGRA.
|
||||
*/
|
||||
|
||||
switch ( fb_format ) {
|
||||
case GL_RGB:
|
||||
bits = (bytes_per_pixel[ index ] == 2)
|
||||
? bits_table[0] : bits_table[1];
|
||||
masks = masks_table_rgb[ index ];
|
||||
break;
|
||||
|
||||
case GL_RGBA:
|
||||
bits = (bytes_per_pixel[ index ] == 2)
|
||||
? bits_table[0] : bits_table[2];
|
||||
masks = masks_table_rgba[ index ];
|
||||
break;
|
||||
|
||||
case GL_BGR:
|
||||
bits = (bytes_per_pixel[ index ] == 2)
|
||||
? bits_table[0] : bits_table[1];
|
||||
masks = masks_table_bgr[ index ];
|
||||
break;
|
||||
|
||||
case GL_BGRA:
|
||||
bits = (bytes_per_pixel[ index ] == 2)
|
||||
? bits_table[0] : bits_table[2];
|
||||
masks = masks_table_bgra[ index ];
|
||||
break;
|
||||
|
||||
default:
|
||||
fprintf( stderr, "[%s:%u] Framebuffer format 0x%04x is not GL_RGB, GL_RGBA, GL_BGR, or GL_BGRA.\n",
|
||||
__func__, __LINE__, fb_format );
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
for ( k = 0 ; k < num_depth_stencil_bits ; k++ ) {
|
||||
for ( i = 0 ; i < num_db_modes ; i++ ) {
|
||||
for ( j = 0 ; j < 2 ; j++ ) {
|
||||
|
||||
modes->redBits = bits[0];
|
||||
modes->greenBits = bits[1];
|
||||
modes->blueBits = bits[2];
|
||||
modes->alphaBits = bits[3];
|
||||
modes->redMask = masks[0];
|
||||
modes->greenMask = masks[1];
|
||||
modes->blueMask = masks[2];
|
||||
modes->alphaMask = masks[3];
|
||||
modes->rgbBits = modes->redBits + modes->greenBits
|
||||
+ modes->blueBits + modes->alphaBits;
|
||||
|
||||
modes->accumRedBits = 16 * j;
|
||||
modes->accumGreenBits = 16 * j;
|
||||
modes->accumBlueBits = 16 * j;
|
||||
modes->accumAlphaBits = (masks[3] != 0) ? 16 * j : 0;
|
||||
modes->visualRating = (j == 0) ? GLX_NONE : GLX_SLOW_CONFIG;
|
||||
|
||||
modes->stencilBits = stencil_bits[k];
|
||||
modes->depthBits = depth_bits[k];
|
||||
|
||||
modes->visualType = visType;
|
||||
modes->renderType = GLX_RGBA_BIT;
|
||||
modes->drawableType = GLX_WINDOW_BIT;
|
||||
modes->rgbMode = GL_TRUE;
|
||||
|
||||
if ( db_modes[i] == GLX_NONE ) {
|
||||
modes->doubleBufferMode = GL_FALSE;
|
||||
}
|
||||
else {
|
||||
modes->doubleBufferMode = GL_TRUE;
|
||||
modes->swapMethod = db_modes[i];
|
||||
}
|
||||
|
||||
modes = modes->next;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
*ptr_to_modes = modes;
|
||||
return GL_TRUE;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* (c) Copyright IBM Corporation 2002
|
||||
* (C) Copyright IBM Corporation 2002, 2004
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
|
|
@ -62,4 +62,10 @@ extern GLboolean driClipRectToFramebuffer( const GLframebuffer *buffer,
|
|||
GLint *x, GLint *y,
|
||||
GLsizei *width, GLsizei *height );
|
||||
|
||||
extern GLboolean driFillInModes( __GLcontextModes ** modes,
|
||||
GLenum fb_format, GLenum fb_type,
|
||||
const uint8_t * depth_bits, const uint8_t * stencil_bits,
|
||||
unsigned num_depth_stencil_bits,
|
||||
const GLenum * db_modes, unsigned num_db_modes, int visType );
|
||||
|
||||
#endif /* DRI_DEBUG_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue