KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gallium: added st_bind/release_teximage() functions

This commit is contained in:
Brian Paul 2008-09-01 13:10:00 -06:00
parent 9d9143d889
commit c074b86cbc
3 changed files with 109 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/mesa/state_tracker/st_cb_fbo.h
View File

@ -47,6 +47,10 @@ struct st_renderbuffer
struct st_texture_object *rtt; /**< GL render to texture's texture */
int rtt_level, rtt_face, rtt_slice;
/** Render to texture state */
struct pipe_texture *texture_save;
struct pipe_surface *surface_save;
};

13
src/mesa/state_tracker/st_public.h
View File

@ -41,6 +41,10 @@
#define ST_SURFACE_BACK_RIGHT 3
#define ST_SURFACE_DEPTH 8
#define ST_TEXTURE_2D 0x2
#define ST_TEXTURE_RGB 0x1
#define ST_TEXTURE_RGBA 0x2
struct st_context;
struct st_framebuffer;
@ -93,6 +97,15 @@ void st_notify_swapbuffers(struct st_framebuffer *stfb);
void st_notify_swapbuffers_complete(struct st_framebuffer *stfb);
/** Redirect rendering into stfb's surface to a texture image */
int st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
int target, int format, int level);
/** Undo surface-to-texture binding */
int st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
int target, int format, int level);
/** Generic function type */
typedef void (*st_proc)();

92
src/mesa/state_tracker/st_texture.c
View File

@ -27,8 +27,11 @@
#include "st_context.h"
#include "st_format.h"
#include "st_public.h"
#include "st_texture.h"
#include "st_cb_fbo.h"
#include "main/enums.h"
#include "main/teximage.h"
#undef Elements /* fix re-defined macro warning */
@ -351,3 +354,92 @@ st_texture_image_copy(struct pipe_context *pipe,
screen->tex_surface_release(screen, &dst_surface);
}
}
/** Redirect rendering into stfb's surface to a texture image */
int
st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
int target, int format, int level)
{
GET_CURRENT_CONTEXT(ctx);
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
const GLuint unit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct st_texture_image *stImage;
struct st_renderbuffer *strb;
GLint face = 0, slice = 0;
assert(surfIndex <= ST_SURFACE_DEPTH);
strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
if (strb->texture_save || strb->surface_save) {
/* Error! */
return 0;
}
if (target == ST_TEXTURE_2D) {
texObj = texUnit->Current2D;
texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
stImage = st_texture_image(texImage);
}
else {
/* unsupported target */
return 0;
}
st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
/* save the renderbuffer's surface/texture info */
pipe_texture_reference(&strb->texture_save, strb->texture);
pipe_surface_reference(&strb->surface_save, strb->surface);
/* plug in new surface/texture info */
pipe_texture_reference(&strb->texture, stImage->pt);
strb->surface = screen->get_tex_surface(screen, strb->texture,
face, level, slice,
(PIPE_BUFFER_USAGE_GPU_READ |
PIPE_BUFFER_USAGE_GPU_WRITE));
st->dirty.st |= ST_NEW_FRAMEBUFFER;
return 1;
}
/** Undo surface-to-texture binding */
int
st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
int target, int format, int level)
{
GET_CURRENT_CONTEXT(ctx);
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct st_renderbuffer *strb;
assert(surfIndex <= ST_SURFACE_DEPTH);
strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
if (!strb->texture_save || !strb->surface_save) {
/* Error! */
return 0;
}
st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
/* free tex surface, restore original */
pipe_surface_reference(&strb->surface, strb->surface_save);
pipe_texture_reference(&strb->texture, strb->texture_save);
pipe_surface_reference(&strb->surface_save, NULL);
pipe_texture_reference(&strb->texture_save, NULL);
st->dirty.st |= ST_NEW_FRAMEBUFFER;
return 1;
}