From: Marek Olšák <marek.ol...@amd.com>
This is more practical and needed by gallium.
---
src/glsl/linker.cpp | 33 +++++++++++++++------------------
src/glsl/nir/glsl_to_nir.cpp | 3 ++-
src/mesa/drivers/dri/i965/brw_vs.c | 2 +-
src/mesa/main/mtypes.h | 5 +----
src/mesa/main/shaderapi.c | 6 +++---
5 files changed, 22 insertions(+), 27 deletions(-)
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index 25ca928..9dd7a49 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -651,7 +651,7 @@ link_invalidate_variable_locations(exec_list *ir)
/**
- * Set UsesClipDistance and ClipDistanceArraySize based on the given shader.
+ * Set ClipDistanceArraySize based on the given shader.
*
* Also check for errors based on incorrect usage of gl_ClipVertex and
* gl_ClipDistance.
@@ -660,7 +660,7 @@ link_invalidate_variable_locations(exec_list *ir)
*/
static void
analyze_clip_usage(struct gl_shader_program *prog,
- struct gl_shader *shader, GLboolean *UsesClipDistance,
+ struct gl_shader *shader,
GLuint *ClipDistanceArraySize)
{
*ClipDistanceArraySize = 0;
@@ -686,13 +686,14 @@ analyze_clip_usage(struct gl_shader_program *prog,
_mesa_shader_stage_to_string(shader->Stage));
return;
}
- *UsesClipDistance = clip_distance.variable_found();
- ir_variable *clip_distance_var =
- shader->symbols->get_variable("gl_ClipDistance");
- if (clip_distance_var)
+
+ if (clip_distance.variable_found()) {
+ ir_variable *clip_distance_var =
+ shader->symbols->get_variable("gl_ClipDistance");
+
+ assert(clip_distance_var);
*ClipDistanceArraySize = clip_distance_var->type->length;
- } else {
- *UsesClipDistance = false;
+ }
}
}
@@ -700,8 +701,7 @@ analyze_clip_usage(struct gl_shader_program *prog,
/**
* Verify that a vertex shader executable meets all semantic requirements.
*
- * Also sets prog->Vert.UsesClipDistance and prog->Vert.ClipDistanceArraySize
- * as a side effect.
+ * Also sets prog->Vert.ClipDistanceArraySize as a side effect.
*
* \param shader Vertex shader executable to be verified
*/
@@ -754,8 +754,7 @@ validate_vertex_shader_executable(struct gl_shader_program
*prog,
}
}
- analyze_clip_usage(prog, shader, &prog->Vert.UsesClipDistance,
- &prog->Vert.ClipDistanceArraySize);
+ analyze_clip_usage(prog, shader, &prog->Vert.ClipDistanceArraySize);
}
void
@@ -765,8 +764,7 @@ validate_tess_eval_shader_executable(struct
gl_shader_program *prog,
if (shader == NULL)
return;
- analyze_clip_usage(prog, shader, &prog->TessEval.UsesClipDistance,
- &prog->TessEval.ClipDistanceArraySize);
+ analyze_clip_usage(prog, shader, &prog->TessEval.ClipDistanceArraySize);
}
@@ -797,8 +795,8 @@ validate_fragment_shader_executable(struct
gl_shader_program *prog,
/**
* Verify that a geometry shader executable meets all semantic requirements
*
- * Also sets prog->Geom.VerticesIn, prog->Geom.UsesClipDistance, and
- * prog->Geom.ClipDistanceArraySize as a side effect.
+ * Also sets prog->Geom.VerticesIn, and prog->Geom.ClipDistanceArraySize as
+ * a side effect.
*
* \param shader Geometry shader executable to be verified
*/
@@ -812,8 +810,7 @@ validate_geometry_shader_executable(struct
gl_shader_program *prog,
unsigned num_vertices = vertices_per_prim(prog->Geom.InputType);
prog->Geom.VerticesIn = num_vertices;
- analyze_clip_usage(prog, shader, &prog->Geom.UsesClipDistance,
- &prog->Geom.ClipDistanceArraySize);
+ analyze_clip_usage(prog, shader, &prog->Geom.ClipDistanceArraySize);
}
/**
diff --git a/src/glsl/nir/glsl_to_nir.cpp b/src/glsl/nir/glsl_to_nir.cpp
index cf5bb93..3f7cc83 100644
--- a/src/glsl/nir/glsl_to_nir.cpp
+++ b/src/glsl/nir/glsl_to_nir.cpp
@@ -160,7 +160,8 @@ glsl_to_nir(const struct gl_shader_program *shader_prog,
shader->info.outputs_written = sh->Program->OutputsWritten;
shader->info.system_values_read = sh->Program->SystemValuesRead;
shader->info.uses_texture_gather = sh->Program->UsesGather;
- shader->info.uses_clip_distance_out = sh->Program->UsesClipDistanceOut;
+ shader->info.uses_clip_distance_out =
+ sh->Program->ClipDistanceArraySize != 0;
shader->info.separate_shader = shader_prog->SeparateShader;
shader->info.gs.vertices_out = sh->Geom.VerticesOut;
shader->info.gs.invocations = sh->Geom.Invocations;
diff --git a/src/mesa/drivers/dri/i965/brw_vs.c
b/src/mesa/drivers/dri/i965/brw_vs.c
index de9a867..f1df2df 100644
--- a/src/mesa/drivers/dri/i965/brw_vs.c
+++ b/src/mesa/drivers/dri/i965/brw_vs.c
@@ -346,7 +346,7 @@ brw_vs_populate_key(struct brw_context *brw,
if (ctx->Transform.ClipPlanesEnabled != 0 &&
ctx->API == API_OPENGL_COMPAT &&
- !vp->program.Base.UsesClipDistanceOut) {
+ vp->program.Base.ClipDistanceArraySize == 0) {
key->nr_userclip_plane_consts =
_mesa_logbase2(ctx->Transform.ClipPlanesEnabled) + 1;
}
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index e9d8ea4..610c25d 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1909,7 +1909,7 @@ struct gl_program
* For vertex and geometry shaders, true if the program uses the
* gl_ClipDistance output. Ignored for fragment shaders.
*/
- GLboolean UsesClipDistanceOut;
+ unsigned ClipDistanceArraySize;
/** Named parameters, constants, etc. from program text */
@@ -2632,7 +2632,6 @@ struct gl_shader_program
* True if gl_ClipDistance is written to. Copied into
* gl_tess_eval_program by _mesa_copy_linked_program_data().
*/
- GLboolean UsesClipDistance;
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
} TessEval;
@@ -2655,7 +2654,6 @@ struct gl_shader_program
* True if gl_ClipDistance is written to. Copied into
* gl_geometry_program by _mesa_copy_linked_program_data().
*/
- GLboolean UsesClipDistance;
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
bool UsesEndPrimitive;
@@ -2668,7 +2666,6 @@ struct gl_shader_program
* True if gl_ClipDistance is written to. Copied into gl_vertex_program
* by _mesa_copy_linked_program_data().
*/
- GLboolean UsesClipDistance;
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
} Vert;
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 6a2f60d..96d68af 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -2072,7 +2072,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
{
switch (type) {
case MESA_SHADER_VERTEX:
- dst->UsesClipDistanceOut = src->Vert.UsesClipDistance;
+ dst->ClipDistanceArraySize = src->Vert.ClipDistanceArraySize;
break;
case MESA_SHADER_TESS_CTRL: {
struct gl_tess_ctrl_program *dst_tcp =
@@ -2087,7 +2087,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
dst_tep->Spacing = src->TessEval.Spacing;
dst_tep->VertexOrder = src->TessEval.VertexOrder;
dst_tep->PointMode = src->TessEval.PointMode;
- dst->UsesClipDistanceOut = src->TessEval.UsesClipDistance;
+ dst->ClipDistanceArraySize = src->TessEval.ClipDistanceArraySize;
break;
}
case MESA_SHADER_GEOMETRY: {
@@ -2097,7 +2097,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
dst_gp->Invocations = src->Geom.Invocations;
dst_gp->InputType = src->Geom.InputType;
dst_gp->OutputType = src->Geom.OutputType;
- dst->UsesClipDistanceOut = src->Geom.UsesClipDistance;
+ dst->ClipDistanceArraySize = src->Geom.ClipDistanceArraySize;
dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
dst_gp->UsesStreams = src->Geom.UsesStreams;
break;
--
2.1.4
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