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authorZack Rusin <zackr@vmware.com>2009-08-28 16:43:21 -0400
committerZack Rusin <zackr@vmware.com>2009-08-31 13:26:01 -0400
commit9ccbadb22d74c649a634c515cd1123fe96781357 (patch)
tree8379999432722d933626fc494b223844e3d78d94 /src/gallium/state_trackers
parent3c3ad915d831a962b284da42659ad15bcadcffa1 (diff)
st/xorg: setup constant buffers for vertex and fragment shaders
Diffstat (limited to 'src/gallium/state_trackers')
-rw-r--r--src/gallium/state_trackers/xorg/xorg_composite.c74
1 files changed, 57 insertions, 17 deletions
diff --git a/src/gallium/state_trackers/xorg/xorg_composite.c b/src/gallium/state_trackers/xorg/xorg_composite.c
index af4ae05fb4..ad14eb75ed 100644
--- a/src/gallium/state_trackers/xorg/xorg_composite.c
+++ b/src/gallium/state_trackers/xorg/xorg_composite.c
@@ -172,27 +172,10 @@ set_viewport(struct exa_context *exa, int width, int height,
static void
bind_viewport_state(struct exa_context *exa, PicturePtr pDstPicture)
{
- const int param_bytes = 8 * sizeof(float);
int width = pDstPicture->pDrawable->width;
int height = pDstPicture->pDrawable->height;
- float vs_consts[8] = {
- 2.f/width, 2.f/height, 1, 1,
- -1, -1, 0, 0
- };
- struct pipe_constant_buffer *cbuf = &exa->vs_const_buffer;
set_viewport(exa, width, height, Y0_BOTTOM);
-
- pipe_buffer_reference(&cbuf->buffer, NULL);
- cbuf->buffer = pipe_buffer_create(exa->ctx->screen, 16,
- PIPE_BUFFER_USAGE_CONSTANT,
- param_bytes);
-
- if (cbuf->buffer) {
- pipe_buffer_write(exa->ctx->screen, cbuf->buffer,
- 0, param_bytes, vs_consts);
- }
- exa->ctx->set_constant_buffer(exa->ctx, PIPE_SHADER_VERTEX, 0, cbuf);
}
static void
@@ -295,6 +278,61 @@ bind_samplers(struct exa_context *exa, int op,
cso_set_sampler_textures(exa->cso, 3, textures);
}
+static void
+setup_vs_constant_buffer(struct exa_context *exa,
+ int width, int height)
+{
+ const int param_bytes = 8 * sizeof(float);
+ float vs_consts[8] = {
+ 2.f/width, 2.f/height, 1, 1,
+ -1, -1, 0, 0
+ };
+ struct pipe_constant_buffer *cbuf = &exa->vs_const_buffer;
+
+ pipe_buffer_reference(&cbuf->buffer, NULL);
+ cbuf->buffer = pipe_buffer_create(exa->ctx->screen, 16,
+ PIPE_BUFFER_USAGE_CONSTANT,
+ param_bytes);
+
+ if (cbuf->buffer) {
+ pipe_buffer_write(exa->ctx->screen, cbuf->buffer,
+ 0, param_bytes, vs_consts);
+ }
+ exa->ctx->set_constant_buffer(exa->ctx, PIPE_SHADER_VERTEX, 0, cbuf);
+}
+
+
+static void
+setup_fs_constant_buffer(struct exa_context *exa)
+{
+ const int param_bytes = 4 * sizeof(float);
+ float fs_consts[8] = {
+ 0, 0, 0, 1,
+ };
+ struct pipe_constant_buffer *cbuf = &exa->fs_const_buffer;
+
+ pipe_buffer_reference(&cbuf->buffer, NULL);
+ cbuf->buffer = pipe_buffer_create(exa->ctx->screen, 16,
+ PIPE_BUFFER_USAGE_CONSTANT,
+ param_bytes);
+
+ if (cbuf->buffer) {
+ pipe_buffer_write(exa->ctx->screen, cbuf->buffer,
+ 0, param_bytes, fs_consts);
+ }
+ exa->ctx->set_constant_buffer(exa->ctx, PIPE_SHADER_FRAGMENT, 0, cbuf);
+}
+
+static void
+setup_constant_buffers(struct exa_context *exa, PicturePtr pDstPicture)
+{
+ int width = pDstPicture->pDrawable->width;
+ int height = pDstPicture->pDrawable->height;
+
+ setup_vs_constant_buffer(exa, width, height);
+ setup_fs_constant_buffer(exa);
+}
+
boolean xorg_composite_bind_state(struct exa_context *exa,
int op,
PicturePtr pSrcPicture,
@@ -312,6 +350,8 @@ boolean xorg_composite_bind_state(struct exa_context *exa,
bind_samplers(exa, op, pSrcPicture, pMaskPicture, pDstPicture,
pSrc, pMask, pDst);
+ setup_constant_buffers(exa, pDstPicture);
+
return FALSE;
}