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authorChristoph Bumiller <[email protected]>2011-08-03 16:01:41 +0200
committerChristoph Bumiller <[email protected]>2011-08-04 15:38:49 +0200
commitf253d83bc72e7d26df8cd3a04747b3d46a8543e6 (patch)
tree9ba23dd4b6977b0014dfe40c1c7ad8c0611a3f39 /src/mesa/state_tracker
parent94822c6d83b7811db2a02bb4416df02ae225ba47 (diff)
st/mesa: implement multisample resolve via BlitFramebuffer
Diffstat (limited to 'src/mesa/state_tracker')
-rw-r--r--src/mesa/state_tracker/st_cb_blit.c116
1 files changed, 111 insertions, 5 deletions
diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c
index 416be194d11..276d10fb557 100644
--- a/src/mesa/state_tracker/st_cb_blit.c
+++ b/src/mesa/state_tracker/st_cb_blit.c
@@ -62,6 +62,81 @@ st_destroy_blit(struct st_context *st)
#if FEATURE_EXT_framebuffer_blit
static void
+st_BlitFramebuffer_resolve(struct gl_context *ctx,
+ GLbitfield mask,
+ struct pipe_resolve_info *info)
+{
+ const GLbitfield depthStencil = GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
+
+ struct st_context *st = st_context(ctx);
+
+ struct st_renderbuffer *srcRb, *dstRb;
+
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ srcRb = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
+ dstRb = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
+
+ info->mask = PIPE_MASK_RGBA;
+
+ info->src.res = srcRb->texture;
+ info->src.layer = srcRb->surface->u.tex.first_layer;
+ info->dst.res = dstRb->texture;
+ info->dst.level = dstRb->surface->u.tex.level;
+ info->dst.layer = dstRb->surface->u.tex.first_layer;
+
+ st->pipe->resource_resolve(st->pipe, info);
+ }
+
+ if (mask & depthStencil) {
+ struct gl_renderbuffer_attachment *srcDepth, *srcStencil;
+ struct gl_renderbuffer_attachment *dstDepth, *dstStencil;
+
+ srcDepth = &ctx->ReadBuffer->Attachment[BUFFER_DEPTH];
+ dstDepth = &ctx->DrawBuffer->Attachment[BUFFER_DEPTH];
+ srcStencil = &ctx->ReadBuffer->Attachment[BUFFER_STENCIL];
+ dstStencil = &ctx->DrawBuffer->Attachment[BUFFER_STENCIL];
+
+ const boolean combined =
+ st_is_depth_stencil_combined(srcDepth, srcStencil) &&
+ st_is_depth_stencil_combined(dstDepth, dstStencil);
+
+ if ((mask & GL_DEPTH_BUFFER_BIT) || combined) {
+ /* resolve depth and, if combined and requested, stencil as well */
+ srcRb = st_renderbuffer(srcDepth->Renderbuffer);
+ dstRb = st_renderbuffer(dstDepth->Renderbuffer);
+
+ info->mask = (mask & GL_DEPTH_BUFFER_BIT) ? PIPE_MASK_Z : 0;
+ if (combined && (mask & GL_STENCIL_BUFFER_BIT))
+ info->mask |= PIPE_MASK_S;
+
+ info->src.res = srcRb->texture;
+ info->src.layer = srcRb->surface->u.tex.first_layer;
+ info->dst.res = dstRb->texture;
+ info->dst.level = dstRb->surface->u.tex.level;
+ info->dst.layer = dstRb->surface->u.tex.first_layer;
+
+ st->pipe->resource_resolve(st->pipe, info);
+ }
+
+ if (mask & GL_STENCIL_BUFFER_BIT) {
+ /* resolve separate stencil buffer */
+ srcRb = st_renderbuffer(srcStencil->Renderbuffer);
+ dstRb = st_renderbuffer(dstStencil->Renderbuffer);
+
+ info->mask = PIPE_MASK_S;
+
+ info->src.res = srcRb->texture;
+ info->src.layer = srcRb->surface->u.tex.first_layer;
+ info->dst.res = dstRb->texture;
+ info->dst.level = dstRb->surface->u.tex.level;
+ info->dst.layer = dstRb->surface->u.tex.first_layer;
+
+ st->pipe->resource_resolve(st->pipe, info);
+ }
+ }
+}
+
+static void
st_BlitFramebuffer(struct gl_context *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
@@ -95,6 +170,42 @@ st_BlitFramebuffer(struct gl_context *ctx,
srcY1 = readFB->Height - srcY1;
}
+ /* Disable conditional rendering. */
+ if (st->render_condition) {
+ st->pipe->render_condition(st->pipe, NULL, 0);
+ }
+
+ if (readFB->Visual.sampleBuffers > drawFB->Visual.sampleBuffers) {
+ struct pipe_resolve_info info;
+
+ if (dstX0 < dstX1) {
+ info.dst.x0 = dstX0;
+ info.dst.x1 = dstX1;
+ info.src.x0 = srcX0;
+ info.src.x1 = srcX1;
+ } else {
+ info.dst.x0 = dstX1;
+ info.dst.x1 = dstX0;
+ info.src.x0 = srcX1;
+ info.src.x1 = srcX0;
+ }
+ if (dstY0 < dstY1) {
+ info.dst.y0 = dstY0;
+ info.dst.y1 = dstY1;
+ info.src.y0 = srcY0;
+ info.src.y1 = srcY1;
+ } else {
+ info.dst.y0 = dstY1;
+ info.dst.y1 = dstY0;
+ info.src.y0 = srcY1;
+ info.src.y1 = srcY0;
+ }
+
+ st_BlitFramebuffer_resolve(ctx, mask, &info); /* filter doesn't apply */
+
+ goto done;
+ }
+
if (srcY0 > srcY1 && dstY0 > dstY1) {
/* Both src and dst are upside down. Swap Y to make it
* right-side up to increase odds of using a fast path.
@@ -109,11 +220,6 @@ st_BlitFramebuffer(struct gl_context *ctx,
dstY1 = tmp;
}
- /* Disable conditional rendering. */
- if (st->render_condition) {
- st->pipe->render_condition(st->pipe, NULL, 0);
- }
-
if (mask & GL_COLOR_BUFFER_BIT) {
struct gl_renderbuffer_attachment *srcAtt =
&readFB->Attachment[readFB->_ColorReadBufferIndex];