diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_clear.c | 117 |
1 files changed, 85 insertions, 32 deletions
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c index 410062e1e80..78baf772f44 100644 --- a/src/mesa/state_tracker/st_cb_clear.c +++ b/src/mesa/state_tracker/st_cb_clear.c @@ -272,6 +272,14 @@ clear_with_quad(GLcontext *ctx, const GLfloat x1 = ctx->DrawBuffer->_Xmax; const GLfloat y1 = ctx->DrawBuffer->_Ymax; + /* + printf("%s %s%s%s %f,%f %f,%f\n", __FUNCTION__, + color ? "color, " : "", + depth ? "depth, " : "", + stencil ? "stencil" : "", + x0, y0, + x1, y1); + */ /* blend state: RGBA masking */ { @@ -389,13 +397,44 @@ clear_with_quad(GLcontext *ctx, * Determine if we need to clear the depth buffer by drawing a quad. */ static INLINE GLboolean -check_clear_color_with_quad(GLcontext *ctx) +check_clear_color_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb) +{ + const struct st_renderbuffer *strb = st_renderbuffer(rb); + + if (strb->surface->status == PIPE_SURFACE_STATUS_UNDEFINED) + return FALSE; + + if (ctx->Scissor.Enabled) + return TRUE; + + if (!ctx->Color.ColorMask[0] || + !ctx->Color.ColorMask[1] || + !ctx->Color.ColorMask[2] || + !ctx->Color.ColorMask[3]) + return TRUE; + + return FALSE; +} + + +static INLINE GLboolean +check_clear_depth_stencil_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb) { - return !(ctx->Color.ColorMask[0] && - ctx->Color.ColorMask[1] && - ctx->Color.ColorMask[2] && - ctx->Color.ColorMask[3] && - !ctx->Scissor.Enabled); + const struct st_renderbuffer *strb = st_renderbuffer(rb); + const GLuint stencilMax = (1 << rb->StencilBits) - 1; + GLboolean maskStencil + = (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax; + + if (strb->surface->status == PIPE_SURFACE_STATUS_UNDEFINED) + return FALSE; + + if (ctx->Scissor.Enabled) + return TRUE; + + if (maskStencil) + return TRUE; + + return FALSE; } @@ -407,10 +446,19 @@ check_clear_depth_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb) { const struct st_renderbuffer *strb = st_renderbuffer(rb); const GLboolean isDS = is_depth_stencil_format(strb->surface->format); - return ctx->Scissor.Enabled - || (isDS && - strb->surface->status == PIPE_SURFACE_STATUS_DEFINED && - ctx->DrawBuffer->Visual.stencilBits > 0); + + if (strb->surface->status == PIPE_SURFACE_STATUS_UNDEFINED) + return FALSE; + + if (ctx->Scissor.Enabled) + return TRUE; + + if (isDS && + strb->surface->status == PIPE_SURFACE_STATUS_DEFINED && + ctx->DrawBuffer->Visual.stencilBits > 0) + return TRUE; + + return FALSE; } @@ -425,9 +473,27 @@ check_clear_stencil_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb) const GLuint stencilMax = (1 << rb->StencilBits) - 1; const GLboolean maskStencil = (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax; - return maskStencil - || ctx->Scissor.Enabled - || (isDS && ctx->DrawBuffer->Visual.depthBits > 0); + + if (strb->surface->status == PIPE_SURFACE_STATUS_UNDEFINED) + return FALSE; + + if (maskStencil) + return TRUE; + + if (ctx->Scissor.Enabled) + return TRUE; + + /* This is correct, but it is necessary to look at the depth clear + * value held in the surface when it comes time to issue the clear, + * rather than taking depth and stencil clear values from the + * current state. + */ + if (isDS && + strb->surface->status == PIPE_SURFACE_STATUS_DEFINED && + ctx->DrawBuffer->Visual.depthBits > 0) + return TRUE; + + return FALSE; } @@ -436,14 +502,10 @@ check_clear_stencil_with_quad(GLcontext *ctx, struct gl_renderbuffer *rb) static void clear_color_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) { - struct st_renderbuffer *strb = st_renderbuffer(rb); - - if (ctx->Color.ColorMask[0] && - ctx->Color.ColorMask[1] && - ctx->Color.ColorMask[2] && - ctx->Color.ColorMask[3] && - !ctx->Scissor.Enabled) + if (!check_clear_color_with_quad( ctx, rb )) { + struct st_renderbuffer *strb = st_renderbuffer(rb); + /* clear whole buffer w/out masking */ GLuint clearValue = color_value(strb->surface->format, ctx->Color.ClearColor); @@ -482,14 +544,8 @@ static void clear_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) { struct st_renderbuffer *strb = st_renderbuffer(rb); - const GLboolean isDS = is_depth_stencil_format(strb->surface->format); - const GLuint stencilMax = (1 << rb->StencilBits) - 1; - GLboolean maskStencil - = (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax; - if (maskStencil || - ctx->Scissor.Enabled || - (isDS && ctx->DrawBuffer->Visual.depthBits > 0)) { + if (check_clear_stencil_with_quad(ctx, rb)) { /* masking or scissoring or combined depth/stencil buffer */ clear_with_quad(ctx, GL_FALSE, GL_FALSE, GL_TRUE); } @@ -505,13 +561,10 @@ static void clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) { struct st_renderbuffer *strb = st_renderbuffer(rb); - const GLuint stencilMax = (1 << rb->StencilBits) - 1; - GLboolean maskStencil - = (ctx->Stencil.WriteMask[0] & stencilMax) != stencilMax; assert(is_depth_stencil_format(strb->surface->format)); - if (!maskStencil && !ctx->Scissor.Enabled) { + if (check_clear_depth_stencil_with_quad(ctx, rb)) { /* clear whole buffer w/out masking */ GLuint clearValue = depth_value(strb->surface->format, ctx->Depth.Clear); @@ -520,7 +573,7 @@ clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb) clearValue |= ctx->Stencil.Clear << 24; break; case PIPE_FORMAT_Z24S8_UNORM: - clearValue |= clearValue | ctx->Stencil.Clear; + clearValue |= ctx->Stencil.Clear; break; default: assert(0); |