[Mesa-dev] [PATCH 15/46] mesa: add tessellation shader getters.
Marek Olšák
maraeo at gmail.com
Tue Jun 16 16:01:11 PDT 2015
From: Fabian Bieler <fabianbieler at fastmail.fm>
Tessellation dependencies added by Marek.
---
src/mesa/main/get.c | 1 +
src/mesa/main/get_hash_params.py | 28 ++++++++++++++
src/mesa/main/shaderapi.c | 84 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 113 insertions(+)
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 1bc9b5d..6f2e1ec 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -400,6 +400,7 @@ EXTRA_EXT(INTEL_performance_query);
EXTRA_EXT(ARB_explicit_uniform_location);
EXTRA_EXT(ARB_clip_control);
EXTRA_EXT(EXT_polygon_offset_clamp);
+EXTRA_EXT(ARB_tessellation_shader);
static const int
extra_ARB_color_buffer_float_or_glcore[] = {
diff --git a/src/mesa/main/get_hash_params.py b/src/mesa/main/get_hash_params.py
index 513d5d2..6d393cc 100644
--- a/src/mesa/main/get_hash_params.py
+++ b/src/mesa/main/get_hash_params.py
@@ -820,6 +820,34 @@ descriptor=[
# GL_EXT_polygon_offset_clamp
[ "POLYGON_OFFSET_CLAMP_EXT", "CONTEXT_FLOAT(Polygon.OffsetClamp), extra_EXT_polygon_offset_clamp" ],
+
+# GL_ARB_tessellation_shader
+ [ "PATCH_VERTICES", "CONTEXT_INT(TessCtrlProgram.patch_vertices), extra_ARB_tessellation_shader" ],
+ [ "PATCH_DEFAULT_OUTER_LEVEL", "CONTEXT_FLOAT4(TessCtrlProgram.patch_default_outer_level), extra_ARB_tessellation_shader" ],
+ [ "PATCH_DEFAULT_INNER_LEVEL", "CONTEXT_FLOAT2(TessCtrlProgram.patch_default_inner_level), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_GEN_LEVEL", "CONTEXT_INT(Const.MaxTessGenLevel), extra_ARB_tessellation_shader" ],
+ [ "MAX_PATCH_VERTICES", "CONTEXT_INT(Const.MaxPatchVertices), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_UNIFORM_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_EVALUATION_UNIFORM_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_OUTPUT_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxOutputComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_PATCH_COMPONENTS", "CONTEXT_INT(Const.MaxTessPatchComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_TOTAL_OUTPUT_COMPONENTS", "CONTEXT_INT(Const.MaxTessControlTotalOutputComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_EVALUATION_OUTPUT_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxOutputComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_INPUT_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxInputComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_EVALUATION_INPUT_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxInputComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_CONTROL_UNIFORM_BLOCKS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxUniformBlocks), extra_ARB_tessellation_shader" ],
+ [ "MAX_TESS_EVALUATION_UNIFORM_BLOCKS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxUniformBlocks), extra_ARB_tessellation_shader" ],
+ [ "MAX_COMBINED_TESS_CONTROL_UNIFORM_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxCombinedUniformComponents), extra_ARB_tessellation_shader" ],
+ [ "MAX_COMBINED_TESS_EVALUATION_UNIFORM_COMPONENTS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxCombinedUniformComponents), extra_ARB_tessellation_shader" ],
+# Dependencies on GL_ARB_tessellation_shader
+ [ "MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicBuffers), extra_ARB_shader_atomic_counters" ],
+ [ "MAX_TESS_CONTROL_ATOMIC_COUNTERS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxAtomicCounters), extra_ARB_shader_atomic_counters" ],
+ [ "MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicBuffers), extra_ARB_shader_atomic_counters" ],
+ [ "MAX_TESS_EVALUATION_ATOMIC_COUNTERS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxAtomicCounters), extra_ARB_shader_atomic_counters" ],
+ [ "MAX_TESS_CONTROL_IMAGE_UNIFORMS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms), extra_ARB_shader_image_load_store"],
+ [ "MAX_TESS_EVALUATION_IMAGE_UNIFORMS", "CONTEXT_INT(Const.Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms), extra_ARB_shader_image_load_store"],
]}
]
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 210746c..b9f6afb 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -518,6 +518,57 @@ check_gs_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
/**
+ * Check if a tessellation control shader query is valid at this time.
+ * If not, report an error and return false.
+ *
+ * From GL 4.0 section 6.1.12 (Shader and Program Queries):
+ *
+ * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
+ * not been linked successfully, or which does not contain objects to
+ * form a tessellation control shader, then an INVALID_OPERATION error is
+ * generated."
+ */
+static bool
+check_tcs_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
+{
+ if (shProg->LinkStatus &&
+ shProg->_LinkedShaders[MESA_SHADER_TESS_CTRL] != NULL) {
+ return true;
+ }
+
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetProgramv(linked tessellation control shader required)");
+ return false;
+}
+
+
+/**
+ * Check if a tessellation evaluation shader query is valid at this time.
+ * If not, report an error and return false.
+ *
+ * From GL 4.0 section 6.1.12 (Shader and Program Queries):
+ *
+ * "If any of the pname values in this paragraph are queried for a program
+ * which has not been linked successfully, or which does not contain
+ * objects to form a tessellation evaluation shader, then an
+ * INVALID_OPERATION error is generated."
+ *
+ */
+static bool
+check_tes_query(struct gl_context *ctx, const struct gl_shader_program *shProg)
+{
+ if (shProg->LinkStatus &&
+ shProg->_LinkedShaders[MESA_SHADER_TESS_EVAL] != NULL) {
+ return true;
+ }
+
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetProgramv(linked tessellation "
+ "evaluation shader required)");
+ return false;
+}
+
+
+/**
* glGetProgramiv() - get shader program state.
* Note that this is for GLSL shader programs, not ARB vertex/fragment
* programs (see glGetProgramivARB).
@@ -540,6 +591,7 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname,
* and GL 3.2) are available in this context
*/
const bool has_core_gs = _mesa_has_geometry_shaders(ctx);
+ const bool has_tess = _mesa_has_tessellation(ctx);
/* Are uniform buffer objects available in this context?
*/
@@ -718,6 +770,38 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname,
case GL_PROGRAM_SEPARABLE:
*params = shProg->SeparateShader;
return;
+
+ /* ARB_tessellation_shader */
+ case GL_TESS_CONTROL_OUTPUT_VERTICES:
+ if (!has_tess)
+ break;
+ if (check_tcs_query(ctx, shProg))
+ *params = shProg->TessCtrl.VerticesOut;
+ return;
+ case GL_TESS_GEN_MODE:
+ if (!has_tess)
+ break;
+ if (check_tes_query(ctx, shProg))
+ *params = shProg->TessEval.PrimitiveMode;
+ return;
+ case GL_TESS_GEN_SPACING:
+ if (!has_tess)
+ break;
+ if (check_tes_query(ctx, shProg))
+ *params = shProg->TessEval.Spacing;
+ return;
+ case GL_TESS_GEN_VERTEX_ORDER:
+ if (!has_tess)
+ break;
+ if (check_tes_query(ctx, shProg))
+ *params = shProg->TessEval.VertexOrder;
+ return;
+ case GL_TESS_GEN_POINT_MODE:
+ if (!has_tess)
+ break;
+ if (check_tes_query(ctx, shProg))
+ *params = shProg->TessEval.PointMode;
+ return;
default:
break;
}
--
2.1.0
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