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mesa: for meta blit, check max texture size, use glCopyTexSubImage2D() when possible

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This commit is contained in:
Brian Paul 2009-08-10 15:05:53 -06:00
parent c16fa388d3
commit 2ad10c966c
1 changed files with 27 additions and 2 deletions
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29
src/mesa/drivers/common/meta.c
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@ -137,6 +137,8 @@ struct save_state
struct blit_state
{
GLuint TexObj;
GLsizei TexWidth, TexHeight;
GLenum TexType;
GLuint ArrayObj;
GLuint VBO;
GLfloat verts[4][4]; /** four verts of X,Y,S,T */
@ -630,6 +632,15 @@ _mesa_meta_blit_framebuffer(GLcontext *ctx,
ASSERT(ctx->Extensions.NV_texture_rectangle);
if (srcW > ctx->Const.MaxTextureRectSize ||
srcH > ctx->Const.MaxTextureRectSize) {
/* XXX avoid this fallback */
_swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1, mask, filter);
return;
}
if (srcFlipX) {
GLint tmp = dstX0;
dstX0 = dstX1;
@ -712,8 +723,22 @@ _mesa_meta_blit_framebuffer(GLcontext *ctx,
/* copy framebuffer image to texture */
if (mask & GL_COLOR_BUFFER_BIT) {
_mesa_CopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA,
srcX, srcY, srcW, srcH, 0);
if (blit->TexWidth == srcW &&
blit->TexHeight == srcH &&
blit->TexType == GL_RGBA) {
/* replace existing tex image */
_mesa_CopyTexSubImage2D(GL_TEXTURE_RECTANGLE, 0,
0, 0, srcX, srcY, srcW, srcH);
}
else {
/* create new tex image */
_mesa_CopyTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA,
srcX, srcY, srcW, srcH, 0);
blit->TexWidth = srcW;
blit->TexHeight = srcH;
blit->TexType = GL_RGBA;
}
mask &= ~GL_COLOR_BUFFER_BIT;
}