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path: root/src/mesa/shader/shader_api.c
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Diffstat (limited to 'src/mesa/shader/shader_api.c')
-rw-r--r--src/mesa/shader/shader_api.c83
1 files changed, 69 insertions, 14 deletions
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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 03:47:05 +0000