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-rw-r--r--src/mesa/shader/nvvertparse.c2
-rw-r--r--src/mesa/shader/prog_execute.c2
-rw-r--r--src/mesa/shader/prog_parameter.c5
-rw-r--r--src/mesa/shader/prog_parameter.h3
-rw-r--r--src/mesa/shader/program_parse.tab.c2
-rw-r--r--src/mesa/shader/program_parse.y2
-rw-r--r--src/mesa/shader/shader_api.c83
-rw-r--r--src/mesa/shader/shader_api.h9
-rw-r--r--src/mesa/shader/slang/library/slang_common_builtin.gc20
-rw-r--r--src/mesa/shader/slang/slang_builtin.c68
-rw-r--r--src/mesa/shader/slang/slang_builtin.h10
-rw-r--r--src/mesa/shader/slang/slang_codegen.c2
-rw-r--r--src/mesa/shader/slang/slang_link.c109
13 files changed, 267 insertions, 50 deletions
diff --git a/src/mesa/shader/nvvertparse.c b/src/mesa/shader/nvvertparse.c
index 631b315af3..7332fc4780 100644
--- a/src/mesa/shader/nvvertparse.c
+++ b/src/mesa/shader/nvvertparse.c
@@ -1096,7 +1096,7 @@ Parse_PrintInstruction(struct parse_state *parseState, struct prog_instruction *
}
}
else {
- srcReg->File = 0;
+ srcReg->File = PROGRAM_UNDEFINED;
}
/* semicolon */
diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c
index 37750cc330..0067512cfb 100644
--- a/src/mesa/shader/prog_execute.c
+++ b/src/mesa/shader/prog_execute.c
@@ -1767,7 +1767,7 @@ _mesa_execute_program(GLcontext * ctx,
break;
case OPCODE_PRINT:
{
- if (inst->SrcReg[0].File != -1) {
+ if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) {
GLfloat a[4];
fetch_vector4(&inst->SrcReg[0], machine, a);
printf("%s%g, %g, %g, %g\n", (const char *) inst->Data,
diff --git a/src/mesa/shader/prog_parameter.c b/src/mesa/shader/prog_parameter.c
index 25bb4f3d44..aac488c79a 100644
--- a/src/mesa/shader/prog_parameter.c
+++ b/src/mesa/shader/prog_parameter.c
@@ -376,7 +376,8 @@ _mesa_add_sampler(struct gl_program_parameter_list *paramList,
*/
GLint
_mesa_add_varying(struct gl_program_parameter_list *paramList,
- const char *name, GLuint size, GLbitfield flags)
+ const char *name, GLuint size, GLenum datatype,
+ GLbitfield flags)
{
GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
if (i >= 0 && paramList->Parameters[i].Type == PROGRAM_VARYING) {
@@ -386,7 +387,7 @@ _mesa_add_varying(struct gl_program_parameter_list *paramList,
else {
/*assert(size == 4);*/
i = _mesa_add_parameter(paramList, PROGRAM_VARYING, name,
- size, GL_NONE, NULL, NULL, flags);
+ size, datatype, NULL, NULL, flags);
return i;
}
}
diff --git a/src/mesa/shader/prog_parameter.h b/src/mesa/shader/prog_parameter.h
index 1111c85976..cc3378ae20 100644
--- a/src/mesa/shader/prog_parameter.h
+++ b/src/mesa/shader/prog_parameter.h
@@ -146,7 +146,8 @@ _mesa_add_sampler(struct gl_program_parameter_list *paramList,
extern GLint
_mesa_add_varying(struct gl_program_parameter_list *paramList,
- const char *name, GLuint size, GLbitfield flags);
+ const char *name, GLuint size, GLenum datatype,
+ GLbitfield flags);
extern GLint
_mesa_add_attribute(struct gl_program_parameter_list *paramList,
diff --git a/src/mesa/shader/program_parse.tab.c b/src/mesa/shader/program_parse.tab.c
index 5679b64974..e5ef25ec38 100644
--- a/src/mesa/shader/program_parse.tab.c
+++ b/src/mesa/shader/program_parse.tab.c
@@ -5560,7 +5560,7 @@ make_error_string(const char *fmt, ...)
va_start(args, fmt);
/* Call vsnprintf once to determine how large the final string is. Call it
- * again to do the actual formatting. from the v_mesa_snprintf manual page:
+ * again to do the actual formatting. from the vsnprintf manual page:
*
* Upon successful return, these functions return the number of
* characters printed (not including the trailing '\0' used to end
diff --git a/src/mesa/shader/program_parse.y b/src/mesa/shader/program_parse.y
index d5fb0fac3e..299e2477e4 100644
--- a/src/mesa/shader/program_parse.y
+++ b/src/mesa/shader/program_parse.y
@@ -2599,7 +2599,7 @@ make_error_string(const char *fmt, ...)
va_start(args, fmt);
/* Call vsnprintf once to determine how large the final string is. Call it
- * again to do the actual formatting. from the v_mesa_snprintf manual page:
+ * again to do the actual formatting. from the vsnprintf manual page:
*
* Upon successful return, these functions return the number of
* characters printed (not including the trailing '\0' used to end
diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index 940fe2d03c..4ff032d4ec 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -123,6 +123,14 @@ _mesa_free_shader_program_data(GLcontext *ctx,
free(shProg->InfoLog);
shProg->InfoLog = NULL;
}
+
+ /* Transform feedback varying vars */
+ for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
+ free(shProg->TransformFeedback.VaryingNames[i]);
+ }
+ free(shProg->TransformFeedback.VaryingNames);
+ shProg->TransformFeedback.VaryingNames = NULL;
+ shProg->TransformFeedback.NumVarying = 0;
}
@@ -397,6 +405,25 @@ get_shader_flags(void)
/**
+ * Find the length of the longest transform feedback varying name
+ * which was specified with glTransformFeedbackVaryings().
+ */
+static GLint
+longest_feedback_varying_name(const struct gl_shader_program *shProg)
+{
+ GLuint i;
+ GLint max = 0;
+ for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
+ GLint len = strlen(shProg->TransformFeedback.VaryingNames[i]);
+ if (len > max)
+ max = len;
+ }
+ return max;
+}
+
+
+
+/**
* Initialize context's shader state.
*/
void
@@ -437,8 +464,9 @@ _mesa_free_shader_state(GLcontext *ctx)
* \param length returns number of chars copied
* \param dst the string destination
*/
-static void
-copy_string(GLchar *dst, GLsizei maxLength, GLsizei *length, const GLchar *src)
+void
+_mesa_copy_string(GLchar *dst, GLsizei maxLength,
+ GLsizei *length, const GLchar *src)
{
GLsizei len;
for (len = 0; len < maxLength - 1 && src && src[len]; len++)
@@ -754,8 +782,11 @@ _mesa_detach_shader(GLcontext *ctx, GLuint program, GLuint shader)
}
-static GLint
-sizeof_glsl_type(GLenum type)
+/**
+ * Return the size of the given GLSL datatype, in floats (components).
+ */
+GLint
+_mesa_sizeof_glsl_type(GLenum type)
{
switch (type) {
case GL_FLOAT:
@@ -800,7 +831,7 @@ sizeof_glsl_type(GLenum type)
case GL_FLOAT_MAT4x3:
return 16; /* four float[4] vectors */
default:
- _mesa_problem(NULL, "Invalid type in sizeof_glsl_type()");
+ _mesa_problem(NULL, "Invalid type in _mesa_sizeof_glsl_type()");
return 1;
}
}
@@ -879,11 +910,12 @@ _mesa_get_active_attrib(GLcontext *ctx, GLuint program, GLuint index,
return;
}
- copy_string(nameOut, maxLength, length, attribs->Parameters[index].Name);
+ _mesa_copy_string(nameOut, maxLength, length,
+ attribs->Parameters[index].Name);
if (size)
*size = attribs->Parameters[index].Size
- / sizeof_glsl_type(attribs->Parameters[index].DataType);
+ / _mesa_sizeof_glsl_type(attribs->Parameters[index].DataType);
if (type)
*type = attribs->Parameters[index].DataType;
@@ -954,11 +986,11 @@ _mesa_get_active_uniform(GLcontext *ctx, GLuint program, GLuint index,
param = &prog->Parameters->Parameters[progPos];
if (nameOut) {
- copy_string(nameOut, maxLength, length, param->Name);
+ _mesa_copy_string(nameOut, maxLength, length, param->Name);
}
if (size) {
- GLint typeSize = sizeof_glsl_type(param->DataType);
+ GLint typeSize = _mesa_sizeof_glsl_type(param->DataType);
if ((GLint) param->Size > typeSize) {
/* This is an array.
* Array elements are placed on vector[4] boundaries so they're
@@ -1063,6 +1095,17 @@ _mesa_get_programiv(GLcontext *ctx, GLuint program,
case GL_PROGRAM_BINARY_LENGTH_OES:
*params = 0;
break;
+#if FEATURE_EXT_transform_feedback
+ case GL_TRANSFORM_FEEDBACK_VARYINGS:
+ *params = shProg->TransformFeedback.NumVarying;
+ break;
+ case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH:
+ *params = longest_feedback_varying_name(shProg) + 1;
+ break;
+ case GL_TRANSFORM_FEEDBACK_BUFFER_MODE:
+ *params = shProg->TransformFeedback.BufferMode;
+ break;
+#endif
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetProgramiv(pname)");
return;
@@ -1112,7 +1155,7 @@ _mesa_get_program_info_log(GLcontext *ctx, GLuint program, GLsizei bufSize,
_mesa_error(ctx, GL_INVALID_VALUE, "glGetProgramInfoLog(program)");
return;
}
- copy_string(infoLog, bufSize, length, shProg->InfoLog);
+ _mesa_copy_string(infoLog, bufSize, length, shProg->InfoLog);
}
@@ -1125,7 +1168,7 @@ _mesa_get_shader_info_log(GLcontext *ctx, GLuint shader, GLsizei bufSize,
_mesa_error(ctx, GL_INVALID_VALUE, "glGetShaderInfoLog(shader)");
return;
}
- copy_string(infoLog, bufSize, length, sh->InfoLog);
+ _mesa_copy_string(infoLog, bufSize, length, sh->InfoLog);
}
@@ -1141,7 +1184,7 @@ _mesa_get_shader_source(GLcontext *ctx, GLuint shader, GLsizei maxLength,
if (!sh) {
return;
}
- copy_string(sourceOut, maxLength, length, sh->Source);
+ _mesa_copy_string(sourceOut, maxLength, length, sh->Source);
}
@@ -1479,6 +1522,12 @@ _mesa_link_program(GLcontext *ctx, GLuint program)
if (!shProg)
return;
+ if (ctx->TransformFeedback.Active && shProg == ctx->Shader.CurrentProgram) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glLinkProgram(transform feedback active");
+ return;
+ }
+
FLUSH_VERTICES(ctx, _NEW_PROGRAM);
_slang_link(ctx, program, shProg);
@@ -1543,6 +1592,12 @@ _mesa_use_program(GLcontext *ctx, GLuint program)
{
struct gl_shader_program *shProg;
+ if (ctx->TransformFeedback.Active) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glUseProgram(transform feedback active)");
+ return;
+ }
+
if (ctx->Shader.CurrentProgram &&
ctx->Shader.CurrentProgram->Name == program) {
/* no-op */
@@ -1731,7 +1786,7 @@ set_program_uniform(GLcontext *ctx, struct gl_program *program,
const GLboolean isUniformBool = is_boolean_type(param->DataType);
const GLboolean areIntValues = is_integer_type(type);
const GLint slots = (param->Size + 3) / 4;
- const GLint typeSize = sizeof_glsl_type(param->DataType);
+ const GLint typeSize = _mesa_sizeof_glsl_type(param->DataType);
GLsizei k, i;
if ((GLint) param->Size > typeSize) {
@@ -1920,7 +1975,7 @@ set_program_uniform_matrix(GLcontext *ctx, struct gl_program *program,
GLuint src = 0;
const struct gl_program_parameter * param = &program->Parameters->Parameters[index];
const GLuint slots = (param->Size + 3) / 4;
- const GLint typeSize = sizeof_glsl_type(param->DataType);
+ const GLint typeSize = _mesa_sizeof_glsl_type(param->DataType);
GLint nr, nc;
/* check that the number of rows, columns is correct */
diff --git a/src/mesa/shader/shader_api.h b/src/mesa/shader/shader_api.h
index d08d47373e..597f0b8e75 100644
--- a/src/mesa/shader/shader_api.h
+++ b/src/mesa/shader/shader_api.h
@@ -42,6 +42,15 @@ _mesa_init_shader_state(GLcontext * ctx);
extern void
_mesa_free_shader_state(GLcontext *ctx);
+
+extern void
+_mesa_copy_string(GLchar *dst, GLsizei maxLength,
+ GLsizei *length, const GLchar *src);
+
+extern GLint
+_mesa_sizeof_glsl_type(GLenum type);
+
+
/*
extern struct gl_shader_program *
_mesa_new_shader_program(GLcontext *ctx, GLuint name);
diff --git a/src/mesa/shader/slang/library/slang_common_builtin.gc b/src/mesa/shader/slang/library/slang_common_builtin.gc
index a25ca55bc4..d75354deff 100644
--- a/src/mesa/shader/slang/library/slang_common_builtin.gc
+++ b/src/mesa/shader/slang/library/slang_common_builtin.gc
@@ -605,7 +605,7 @@ float sqrt(const float x)
const float nx = -x;
float r;
__asm float_rsq r, x;
- __asm float_rcp r, r;
+ r = r * x;
__asm vec4_cmp __retVal, nx, r, 0.0;
}
@@ -615,8 +615,7 @@ vec2 sqrt(const vec2 x)
vec2 r;
__asm float_rsq r.x, x.x;
__asm float_rsq r.y, x.y;
- __asm float_rcp r.x, r.x;
- __asm float_rcp r.y, r.y;
+ r = r * x;
__asm vec4_cmp __retVal, nx, r, zero;
}
@@ -627,9 +626,7 @@ vec3 sqrt(const vec3 x)
__asm float_rsq r.x, x.x;
__asm float_rsq r.y, x.y;
__asm float_rsq r.z, x.z;
- __asm float_rcp r.x, r.x;
- __asm float_rcp r.y, r.y;
- __asm float_rcp r.z, r.z;
+ r = r * x;
__asm vec4_cmp __retVal, nx, r, zero;
}
@@ -641,10 +638,7 @@ vec4 sqrt(const vec4 x)
__asm float_rsq r.y, x.y;
__asm float_rsq r.z, x.z;
__asm float_rsq r.w, x.w;
- __asm float_rcp r.x, r.x;
- __asm float_rcp r.y, r.y;
- __asm float_rcp r.z, r.z;
- __asm float_rcp r.w, r.w;
+ r = r * x;
__asm vec4_cmp __retVal, nx, r, zero;
}
@@ -1166,7 +1160,7 @@ float length(const vec2 v)
float r;
const float p = dot(v, v); // p = v.x * v.x + v.y * v.y
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal.x, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
float length(const vec3 v)
@@ -1174,7 +1168,7 @@ float length(const vec3 v)
float r;
const float p = dot(v, v); // p = v.x * v.x + v.y * v.y + v.z * v.z
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
float length(const vec4 v)
@@ -1182,7 +1176,7 @@ float length(const vec4 v)
float r;
const float p = dot(v, v); // p = v.x * v.x + v.y * v.y + ...
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
diff --git a/src/mesa/shader/slang/slang_builtin.c b/src/mesa/shader/slang/slang_builtin.c
index 791e751526..b7bf4e06dc 100644
--- a/src/mesa/shader/slang/slang_builtin.c
+++ b/src/mesa/shader/slang/slang_builtin.c
@@ -752,7 +752,6 @@ static const struct input_info fragInputs[] = {
{ "gl_Color", FRAG_ATTRIB_COL0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
{ "gl_SecondaryColor", FRAG_ATTRIB_COL1, GL_FLOAT_VEC4, SWIZZLE_NOOP },
{ "gl_TexCoord", FRAG_ATTRIB_TEX0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
- /* note: we're packing several quantities into the fogcoord vector */
{ "gl_FogFragCoord", FRAG_ATTRIB_FOGC, GL_FLOAT, SWIZZLE_XXXX },
{ "gl_FrontFacing", FRAG_ATTRIB_FACE, GL_FLOAT, SWIZZLE_XXXX },
{ "gl_PointCoord", FRAG_ATTRIB_PNTC, GL_FLOAT_VEC2, SWIZZLE_XYZW },
@@ -839,27 +838,28 @@ struct output_info
{
const char *Name;
GLuint Attrib;
+ GLenum Type;
};
/** Predefined vertex shader outputs */
static const struct output_info vertOutputs[] = {
- { "gl_Position", VERT_RESULT_HPOS },
- { "gl_FrontColor", VERT_RESULT_COL0 },
- { "gl_BackColor", VERT_RESULT_BFC0 },
- { "gl_FrontSecondaryColor", VERT_RESULT_COL1 },
- { "gl_BackSecondaryColor", VERT_RESULT_BFC1 },
- { "gl_TexCoord", VERT_RESULT_TEX0 },
- { "gl_FogFragCoord", VERT_RESULT_FOGC },
- { "gl_PointSize", VERT_RESULT_PSIZ },
- { NULL, 0 }
+ { "gl_Position", VERT_RESULT_HPOS, GL_FLOAT_VEC4 },
+ { "gl_FrontColor", VERT_RESULT_COL0, GL_FLOAT_VEC4 },
+ { "gl_BackColor", VERT_RESULT_BFC0, GL_FLOAT_VEC4 },
+ { "gl_FrontSecondaryColor", VERT_RESULT_COL1, GL_FLOAT_VEC4 },
+ { "gl_BackSecondaryColor", VERT_RESULT_BFC1, GL_FLOAT_VEC4 },
+ { "gl_TexCoord", VERT_RESULT_TEX0, GL_FLOAT_VEC4 },
+ { "gl_FogFragCoord", VERT_RESULT_FOGC, GL_FLOAT },
+ { "gl_PointSize", VERT_RESULT_PSIZ, GL_FLOAT },
+ { NULL, 0, GL_NONE }
};
/** Predefined fragment shader outputs */
static const struct output_info fragOutputs[] = {
- { "gl_FragColor", FRAG_RESULT_COLOR },
- { "gl_FragDepth", FRAG_RESULT_DEPTH },
- { "gl_FragData", FRAG_RESULT_DATA0 },
- { NULL, 0 }
+ { "gl_FragColor", FRAG_RESULT_COLOR, GL_FLOAT_VEC4 },
+ { "gl_FragDepth", FRAG_RESULT_DEPTH, GL_FLOAT },
+ { "gl_FragData", FRAG_RESULT_DATA0, GL_FLOAT_VEC4 },
+ { NULL, 0, GL_NONE }
};
@@ -895,3 +895,43 @@ _slang_output_index(const char *name, GLenum target)
}
return -1;
}
+
+
+/**
+ * Given a VERT_RESULT_x index, return the corresponding string name.
+ */
+const char *
+_slang_vertex_output_name(gl_vert_result index)
+{
+ if (index < Elements(vertOutputs))
+ return vertOutputs[index].Name;
+ else
+ return NULL;
+}
+
+
+/**
+ * Given a FRAG_RESULT_x index, return the corresponding string name.
+ */
+const char *
+_slang_fragment_output_name(gl_frag_result index)
+{
+ if (index < Elements(fragOutputs))
+ return fragOutputs[index].Name;
+ else
+ return NULL;
+}
+
+
+/**
+ * Given a VERT_RESULT_x index, return the corresponding varying
+ * var's datatype.
+ */
+GLenum
+_slang_vertex_output_type(gl_vert_result index)
+{
+ if (index < Elements(vertOutputs))
+ return vertOutputs[index].Type;
+ else
+ return GL_NONE;
+}
diff --git a/src/mesa/shader/slang/slang_builtin.h b/src/mesa/shader/slang/slang_builtin.h
index f814d11ac7..c3021ca33c 100644
--- a/src/mesa/shader/slang/slang_builtin.h
+++ b/src/mesa/shader/slang/slang_builtin.h
@@ -51,4 +51,14 @@ extern GLenum
_slang_vert_attrib_type(GLuint attrib);
+const char *
+_slang_vertex_output_name(gl_vert_result index);
+
+const char *
+_slang_fragment_output_name(gl_frag_result index);
+
+GLenum
+_slang_vertex_output_type(gl_vert_result index);
+
+
#endif /* SLANG_BUILTIN_H */
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index ecb2f6d5c1..fa79632c18 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -5130,7 +5130,7 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
flags |= PROG_PARAM_BIT_INVARIANT;
varyingLoc = _mesa_add_varying(prog->Varying, varName,
- totalSize, flags);
+ totalSize, GL_NONE, flags);
swizzle = _slang_var_swizzle(size, 0);
store = _slang_new_ir_storage_swz(PROGRAM_VARYING, varyingLoc,
totalSize, swizzle);
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 7c7bfbdbc5..f71fde1d72 100644
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -87,6 +87,107 @@ bits_agree(GLbitfield flags1, GLbitfield flags2, GLbitfield bit)
/**
+ * Examine the outputs/varyings written by the vertex shader and
+ * append the names of those outputs onto the Varyings list.
+ * This will only capture the pre-defined/built-in varyings like
+ * gl_Position, not user-defined varyings.
+ */
+static void
+update_varying_var_list(GLcontext *ctx, struct gl_shader_program *shProg)
+{
+ if (shProg->VertexProgram) {
+ GLbitfield64 written = shProg->VertexProgram->Base.OutputsWritten;
+ GLuint i;
+ for (i = 0; written && i < VERT_RESULT_MAX; i++) {
+ if (written & BITFIELD64_BIT(i)) {
+ const char *name = _slang_vertex_output_name(i);
+ if (name)
+ _mesa_add_varying(shProg->Varying, name, 1, GL_FLOAT_VEC4, 0x0);
+ written &= ~BITFIELD64_BIT(i);
+ }
+ }
+ }
+}
+
+
+/**
+ * Do link error checking related to transform feedback.
+ */
+static GLboolean
+link_transform_feedback(GLcontext *ctx, struct gl_shader_program *shProg)
+{
+ GLbitfield varyingMask;
+ GLuint totalComps, maxComps, i;
+
+ if (shProg->TransformFeedback.NumVarying == 0) {
+ /* nothing to do */
+ return GL_TRUE;
+ }
+
+ /* Check that there's a vertex shader */
+ if (shProg->TransformFeedback.NumVarying > 0 &&
+ !shProg->VertexProgram) {
+ link_error(shProg, "Transform feedback without vertex shader");
+ return GL_FALSE;
+ }
+
+ /* Check that all named variables exist, and that none are duplicated.
+ * Also, build a count of the number of varying components to feedback.
+ */
+ totalComps = 0;
+ varyingMask = 0x0;
+ for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
+ const GLchar *name = shProg->TransformFeedback.VaryingNames[i];
+ GLint v = _mesa_lookup_parameter_index(shProg->Varying, -1, name);
+ struct gl_program_parameter *p;
+
+ if (v < 0) {
+ char msg[100];
+ _mesa_snprintf(msg, sizeof(msg),
+ "vertex shader does not emit %s", name);
+ link_error(shProg, msg);
+ return GL_FALSE;
+ }
+
+ assert(v < MAX_VARYING);
+
+ /* already seen this varying name? */
+ if (varyingMask & (1 << v)) {
+ char msg[100];
+ _mesa_snprintf(msg, sizeof(msg),
+ "duplicated transform feedback varying name: %s",
+ name);
+ link_error(shProg, msg);
+ return GL_FALSE;
+ }
+
+ varyingMask |= (1 << v);
+
+ p = &shProg->Varying->Parameters[v];
+
+ totalComps += _mesa_sizeof_glsl_type(p->DataType);
+ }
+
+ if (shProg->TransformFeedback.BufferMode == GL_INTERLEAVED_ATTRIBS)
+ maxComps = ctx->Const.MaxTransformFeedbackInterleavedComponents;
+ else
+ maxComps = ctx->Const.MaxTransformFeedbackSeparateComponents;
+
+ /* check max varying components against the limit */
+ if (totalComps > maxComps) {
+ char msg[100];
+ _mesa_snprintf(msg, sizeof(msg),
+ "Too many feedback components: %u, max is %u",
+ totalComps, maxComps);
+ link_error(shProg, msg);
+ return GL_FALSE;
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
* Linking varying vars involves rearranging varying vars so that the
* vertex program's output varyings matches the order of the fragment
* program's input varyings.
@@ -157,7 +258,7 @@ link_varying_vars(GLcontext *ctx,
else {
/* not already in linked list */
j = _mesa_add_varying(shProg->Varying, var->Name, var->Size,
- var->Flags);
+ var->DataType, var->Flags);
}
if (shProg->Varying->NumParameters > ctx->Const.MaxVarying) {
@@ -866,6 +967,12 @@ _slang_link(GLcontext *ctx,
}
}
+ update_varying_var_list(ctx, shProg);
+
+ /* checks related to transform feedback */
+ if (!link_transform_feedback(ctx, shProg)) {
+ return;
+ }
if (fragProg && shProg->FragmentProgram) {
/* Compute initial program's TexturesUsed info */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 06:44:28 +0000