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-rw-r--r--mesalib/src/mesa/main/extensions.c2
-rw-r--r--mesalib/src/mesa/main/mtypes.h10
-rw-r--r--mesalib/src/mesa/main/shaderapi.c16
-rw-r--r--mesalib/src/mesa/main/transformfeedback.c58
-rw-r--r--mesalib/src/mesa/main/transformfeedback.h4
5 files changed, 81 insertions, 9 deletions
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index 88fcde3b9..34615e3e0 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -201,6 +201,7 @@ static const struct extension extension_table[] = {
{ "GL_EXT_secondary_color", o(dummy_true), GLL, 1999 },
{ "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects), GLL, 2008 },
{ "GL_EXT_separate_specular_color", o(dummy_true), GLL, 1997 },
+ { "GL_EXT_shader_integer_mix", o(EXT_shader_integer_mix), GL | ES3, 2013 },
{ "GL_EXT_shadow_funcs", o(ARB_shadow), GLL, 2002 },
{ "GL_EXT_stencil_two_side", o(EXT_stencil_two_side), GLL, 2001 },
{ "GL_EXT_stencil_wrap", o(dummy_true), GLL, 2002 },
@@ -311,7 +312,6 @@ static const struct extension extension_table[] = {
{ "GL_IBM_texture_mirrored_repeat", o(dummy_true), GLL, 1998 },
{ "GL_INGR_blend_func_separate", o(EXT_blend_func_separate), GLL, 1999 },
{ "GL_MESA_pack_invert", o(MESA_pack_invert), GL, 2002 },
- { "GL_MESA_shader_integer_mix", o(MESA_shader_integer_mix), GL | ES3, 2013 },
{ "GL_MESA_texture_array", o(MESA_texture_array), GLL, 2007 },
{ "GL_MESA_texture_signed_rgba", o(EXT_texture_snorm), GL, 2009 },
{ "GL_MESA_window_pos", o(dummy_true), GLL, 2000 },
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index ca7111e50..6d700ece8 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1718,6 +1718,12 @@ struct gl_transform_feedback_object
GLboolean EverBound; /**< Has this object been bound? */
/**
+ * The shader program active when BeginTransformFeedback() was called.
+ * When active and unpaused, this equals ctx->Shader.CurrentVertexProgram.
+ */
+ struct gl_shader_program *shader_program;
+
+ /**
* GLES: if Active is true, remaining number of primitives which can be
* rendered without overflow. This is necessary to track because GLES
* requires us to generate INVALID_OPERATION if a call to glDrawArrays or
@@ -1931,6 +1937,7 @@ struct gl_geometry_program
GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
GLboolean UsesClipDistance;
+ GLboolean UsesEndPrimitive;
};
@@ -2364,6 +2371,7 @@ struct gl_shader_program
GLboolean UsesClipDistance;
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
+ GLboolean UsesEndPrimitive;
} Geom;
/** Vertex shader state */
@@ -3125,6 +3133,7 @@ struct gl_extensions
GLboolean EXT_point_parameters;
GLboolean EXT_provoking_vertex;
GLboolean EXT_separate_shader_objects;
+ GLboolean EXT_shader_integer_mix;
GLboolean EXT_stencil_two_side;
GLboolean EXT_texture3D;
GLboolean EXT_texture_array;
@@ -3154,7 +3163,6 @@ struct gl_extensions
GLboolean ATI_fragment_shader;
GLboolean ATI_separate_stencil;
GLboolean MESA_pack_invert;
- GLboolean MESA_shader_integer_mix;
GLboolean MESA_texture_array;
GLboolean MESA_ycbcr_texture;
GLboolean NV_conditional_render;
diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index 4fe9d9ca2..4c0484aaf 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -42,6 +42,7 @@
#include "main/dispatch.h"
#include "main/enums.h"
#include "main/hash.h"
+#include "main/hash_table.h"
#include "main/mtypes.h"
#include "main/shaderapi.h"
#include "main/shaderobj.h"
@@ -812,19 +813,19 @@ static void
link_program(struct gl_context *ctx, GLuint program)
{
struct gl_shader_program *shProg;
- struct gl_transform_feedback_object *obj =
- ctx->TransformFeedback.CurrentObject;
shProg = _mesa_lookup_shader_program_err(ctx, program, "glLinkProgram");
if (!shProg)
return;
- if (obj->Active
- && (shProg == ctx->Shader.CurrentVertexProgram
- || shProg == ctx->Shader.CurrentGeometryProgram
- || shProg == ctx->Shader.CurrentFragmentProgram)) {
+ /* From the ARB_transform_feedback2 specification:
+ * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
+ * the name of a program being used by one or more transform feedback
+ * objects, even if the objects are not currently bound or are paused."
+ */
+ if (_mesa_transform_feedback_is_using_program(ctx, shProg)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
- "glLinkProgram(transform feedback active)");
+ "glLinkProgram(transform feedback is using the program)");
return;
}
@@ -1872,6 +1873,7 @@ _mesa_copy_linked_program_data(gl_shader_type type,
dst_gp->InputType = src->Geom.InputType;
dst_gp->OutputType = src->Geom.OutputType;
dst_gp->UsesClipDistance = src->Geom.UsesClipDistance;
+ dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
}
break;
default:
diff --git a/mesalib/src/mesa/main/transformfeedback.c b/mesalib/src/mesa/main/transformfeedback.c
index 3f8a7f48d..bc9b52ab9 100644
--- a/mesalib/src/mesa/main/transformfeedback.c
+++ b/mesalib/src/mesa/main/transformfeedback.c
@@ -44,6 +44,41 @@
#include "program/prog_parameter.h"
+struct using_program_tuple
+{
+ struct gl_shader_program *shProg;
+ bool found;
+};
+
+static void
+active_xfb_object_references_program(GLuint key, void *data, void *user_data)
+{
+ struct using_program_tuple *callback_data = user_data;
+ struct gl_transform_feedback_object *obj = data;
+ if (obj->Active && obj->shader_program == callback_data->shProg)
+ callback_data->found = true;
+}
+
+/**
+ * Return true if any active transform feedback object is using a program.
+ */
+bool
+_mesa_transform_feedback_is_using_program(struct gl_context *ctx,
+ struct gl_shader_program *shProg)
+{
+ struct using_program_tuple callback_data;
+ callback_data.shProg = shProg;
+ callback_data.found = false;
+
+ _mesa_HashWalk(ctx->TransformFeedback.Objects,
+ active_xfb_object_references_program, &callback_data);
+
+ /* Also check DefaultObject, as it's not in the Objects hash table. */
+ active_xfb_object_references_program(0, ctx->TransformFeedback.DefaultObject,
+ &callback_data);
+
+ return callback_data.found;
+}
/**
* Do reference counting of transform feedback buffers.
@@ -406,6 +441,8 @@ _mesa_BeginTransformFeedback(GLenum mode)
obj->GlesRemainingPrims = max_vertices / vertices_per_prim;
}
+ obj->shader_program = ctx->Shader.CurrentVertexProgram;
+
assert(ctx->Driver.BeginTransformFeedback);
ctx->Driver.BeginTransformFeedback(ctx, mode, obj);
}
@@ -611,6 +648,16 @@ _mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,
GLint i;
GET_CURRENT_CONTEXT(ctx);
+ /* From the ARB_transform_feedback2 specification:
+ * "The error INVALID_OPERATION is generated by TransformFeedbackVaryings
+ * if the current transform feedback object is active, even if paused."
+ */
+ if (ctx->TransformFeedback.CurrentObject->Active) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glTransformFeedbackVaryings(current object is active)");
+ return;
+ }
+
switch (bufferMode) {
case GL_INTERLEAVED_ATTRIBS:
break;
@@ -931,6 +978,17 @@ _mesa_ResumeTransformFeedback(void)
return;
}
+ /* From the ARB_transform_feedback2 specification:
+ * "The error INVALID_OPERATION is generated by ResumeTransformFeedback if
+ * the program object being used by the current transform feedback object
+ * is not active."
+ */
+ if (obj->shader_program != ctx->Shader.CurrentVertexProgram) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glResumeTransformFeedback(wrong vertex program bound)");
+ return;
+ }
+
FLUSH_VERTICES(ctx, 0);
ctx->NewDriverState |= ctx->DriverFlags.NewTransformFeedback;
diff --git a/mesalib/src/mesa/main/transformfeedback.h b/mesalib/src/mesa/main/transformfeedback.h
index f6dc2a7b3..0ffaab508 100644
--- a/mesalib/src/mesa/main/transformfeedback.h
+++ b/mesalib/src/mesa/main/transformfeedback.h
@@ -120,4 +120,8 @@ _mesa_is_xfb_active_and_unpaused(const struct gl_context *ctx)
!ctx->TransformFeedback.CurrentObject->Paused;
}
+extern bool
+_mesa_transform_feedback_is_using_program(struct gl_context *ctx,
+ struct gl_shader_program *shProg);
+
#endif /* TRANSFORM_FEEDBACK_H */