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gallium: fix-up inverted do_copy_texsubimage()

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The logic/arithmetic for inverting the src image is a bit simpler now.
This commit is contained in:
Brian Paul 2008-06-23 09:50:09 -06:00
parent f738c3acac
commit a479bf6235
1 changed files with 30 additions and 21 deletions
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51
src/mesa/state_tracker/st_cb_texture.c
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@ -1157,11 +1157,12 @@ do_copy_texsubimage(GLcontext *ctx,
struct pipe_context *pipe = ctx->st->pipe;
struct pipe_screen *screen = pipe->screen;
uint dest_format, src_format;
uint do_flip = FALSE;
GLboolean use_fallback = GL_TRUE;
(void) texImage;
/* XX need this? st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);*/
/* determine if copying depth or color data */
if (baseFormat == GL_DEPTH_COMPONENT) {
strb = st_renderbuffer(fb->_DepthBuffer);
@ -1178,11 +1179,6 @@ do_copy_texsubimage(GLcontext *ctx,
assert(strb->surface);
assert(stImage->pt);
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
srcY = strb->Base.Height - srcY - height;
do_flip = TRUE;
}
src_format = strb->surface->format;
dest_format = stImage->pt->format;
@ -1190,7 +1186,8 @@ do_copy_texsubimage(GLcontext *ctx,
/* do blit-style copy */
struct pipe_surface *dest_surface;
dest_surface = screen->get_tex_surface(screen, stImage->pt, stImage->face,
dest_surface = screen->get_tex_surface(screen, stImage->pt,
stImage->face,
stImage->level, destZ,
PIPE_BUFFER_USAGE_GPU_WRITE);
@ -1198,28 +1195,40 @@ do_copy_texsubimage(GLcontext *ctx,
assert(dest_surface->buffer);
if (src_format == dest_format) {
pipe->surface_copy(pipe,
do_flip,
/* dest */
dest_surface,
destX, destY,
/* src */
strb->surface,
srcX, srcY,
/* size */
width, height);
use_fallback = GL_FALSE;
boolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
pipe->surface_copy(pipe,
do_flip,
/* dest */
dest_surface,
destX, destY,
/* src */
strb->surface,
srcX, srcY,
/* size */
width, height);
use_fallback = GL_FALSE;
}
else if (screen->is_format_supported(screen, strb->surface->format,
PIPE_TEXTURE) &&
screen->is_format_supported(screen, dest_surface->format,
PIPE_SURFACE)) {
boolean do_flip = (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP);
int srcY0, srcY1;
if (do_flip) {
srcY1 = strb->Base.Height - srcY - height;
srcY0 = srcY1 + height;
}
else {
srcY0 = srcY;
srcY1 = srcY0 + height;
}
util_blit_pixels(ctx->st->blit,
strb->surface,
srcX, do_flip ? srcY + height : srcY,
srcX + width, do_flip ? srcY : srcY + height,
srcX, srcY0,
srcX + width, srcY1,
dest_surface,
destX, destY, destX + width, destY + height,
destX, destY,
destX + width, destY + height,
0.0, PIPE_TEX_MIPFILTER_NEAREST);
use_fallback = GL_FALSE;
}