[Mesa-dev] [PATCH 06/14] st/mesa: query shader CAPs for tessellation

[Marek Olšák]

From: Ilia Mirkin <imirkin at alum.mit.edu>

The MaxTessPatchComponents query added by Marek.
---
 src/mesa/state_tracker/st_extensions.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index b1057f3..6c70df6 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -165,6 +165,14 @@ void st_init_limits(struct pipe_screen *screen,
          pc = &c->Program[MESA_SHADER_GEOMETRY];
          options = &c->ShaderCompilerOptions[MESA_SHADER_GEOMETRY];
          break;
+      case PIPE_SHADER_TESS_CTRL:
+         pc = &c->Program[MESA_SHADER_TESS_CTRL];
+         options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_CTRL];
+         break;
+      case PIPE_SHADER_TESS_EVAL:
+         pc = &c->Program[MESA_SHADER_TESS_EVAL];
+         options = &c->ShaderCompilerOptions[MESA_SHADER_TESS_EVAL];
+         break;
       default:
          /* compute shader, etc. */
          continue;
@@ -247,6 +255,8 @@ void st_init_limits(struct pipe_screen *screen,
 
    c->MaxCombinedTextureImageUnits =
          _min(c->Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
+              c->Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits +
+              c->Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits +
               c->Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
               c->Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
               MAX_COMBINED_TEXTURE_IMAGE_UNITS);
@@ -266,6 +276,9 @@ void st_init_limits(struct pipe_screen *screen,
    c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
    c->MaxGeometryOutputVertices = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES);
    c->MaxGeometryTotalOutputComponents = screen->get_param(screen, PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS);
+   c->MaxTessPatchComponents =
+      MAX2(screen->get_param(screen, PIPE_CAP_MAX_SHADER_PATCH_VARYINGS),
+           MAX_VARYING) * 4;
 
    c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);
    c->MaxProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MAX_TEXEL_OFFSET);
@@ -301,6 +314,8 @@ void st_init_limits(struct pipe_screen *screen,
          screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
       c->MaxCombinedUniformBlocks = c->MaxUniformBufferBindings =
          c->Program[MESA_SHADER_VERTEX].MaxUniformBlocks +
+         c->Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks +
+         c->Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks +
          c->Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks +
          c->Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks;
       assert(c->MaxCombinedUniformBlocks <= MAX_COMBINED_UNIFORM_BUFFERS);
-- 
2.1.0