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gallium: add st_set_teximage_surface for EXT_texture_from_pixmap

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Ben Skeggs 2008-11-13 16:47:47 +00:00 • committed by Alan Hourihane
parent 16340f8d4d
commit 2acdb116ce
2 changed files with 50 additions and 0 deletions
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3
src/mesa/state_tracker/st_public.h
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@ -42,6 +42,8 @@
#define ST_SURFACE_DEPTH 8
#define ST_TEXTURE_2D 0x2
#define ST_TEXTURE_RECT 0x4
#define ST_TEXTURE_RGB 0x1
#define ST_TEXTURE_RGBA 0x2
@ -99,6 +101,7 @@ void st_finish( struct st_context *st );
void st_notify_swapbuffers(struct st_framebuffer *stfb);
void st_notify_swapbuffers_complete(struct st_framebuffer *stfb);
int st_set_teximage(struct pipe_texture *pt, int target);
/** Redirect rendering into stfb's surface to a texture image */
int st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,

47
src/mesa/state_tracker/st_texture.c
View file

@ -32,6 +32,7 @@
#include "st_cb_fbo.h"
#include "main/enums.h"
#include "main/teximage.h"
#include "main/texstore.h"
#undef Elements /* fix re-defined macro warning */
@ -352,6 +353,52 @@ st_texture_image_copy(struct pipe_context *pipe,
}
}
/** Bind a pipe surface for use as a texture image */
int
st_set_teximage(struct pipe_texture *pt, int target)
{
GET_CURRENT_CONTEXT(ctx);
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;
int internalFormat;
switch (pt->format) {
case PIPE_FORMAT_A8R8G8B8_UNORM:
internalFormat = GL_RGBA8;
break;
default:
return 0;
};
switch (target) {
case ST_TEXTURE_2D:
target = GL_TEXTURE_2D;
break;
case ST_TEXTURE_RECT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
default:
return 0;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
stImage = st_texture_image(texImage);
_mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0],
pt->height[0], 1, 0, internalFormat);
texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA,
GL_UNSIGNED_BYTE);
_mesa_set_fetch_functions(texImage, 2);
pipe_texture_reference(&stImage->pt, pt);
return 1;
}
/** Redirect rendering into stfb's surface to a texture image */
int