/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdbool.h>
#include "glheader.h"
#include "context.h"
#include "get.h"
#include "enums.h"
#include "extensions.h"
#include "mtypes.h"
/**
* Return the string for a glGetString(GL_SHADING_LANGUAGE_VERSION) query.
*/
static const GLubyte *
shading_language_version(struct gl_context *ctx)
{
switch (ctx->API) {
case API_OPENGL_COMPAT:
case API_OPENGL_CORE:
switch (ctx->Const.GLSLVersion) {
case 120:
return (const GLubyte *) "1.20";
case 130:
return (const GLubyte *) "1.30";
case 140:
return (const GLubyte *) "1.40";
case 150:
return (const GLubyte *) "1.50";
case 330:
return (const GLubyte *) "3.30";
case 400:
return (const GLubyte *) "4.00";
case 410:
return (const GLubyte *) "4.10";
case 420:
return (const GLubyte *) "4.20";
case 430:
return (const GLubyte *) "4.30";
case 440:
return (const GLubyte *) "4.40";
case 450:
return (const GLubyte *) "4.50";
default:
_mesa_problem(ctx,
"Invalid GLSL version in shading_language_version()");
return (const GLubyte *) 0;
}
break;
case API_OPENGLES2:
return (ctx->Version < 30)
? (const GLubyte *) "OpenGL ES GLSL ES 1.0.16"
: (const GLubyte *) "OpenGL ES GLSL ES 3.00";
case API_OPENGLES:
/* fall-through */
default:
_mesa_problem(ctx, "Unexpected API value in shading_language_version()");
return (const GLubyte *) 0;
}
}
/**
* Query string-valued state. The return value should _not_ be freed by
* the caller.
*
* \param name the state variable to query.
*
* \sa glGetString().
*
* Tries to get the string from dd_function_table::GetString, otherwise returns
* the hardcoded strings.
*/
const GLubyte * GLAPIENTRY
_mesa_GetString( GLenum name )
{
GET_CURRENT_CONTEXT(ctx);
static const char *vendor = "Brian Paul";
static const char *renderer = "Mesa";
if (!ctx)
return NULL;
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
/* this is a required driver function */
assert(ctx
->Driver.
GetString); {
/* Give the driver the chance to handle this query */
const GLubyte *str = (*ctx->Driver.GetString)(ctx, name);
if (str)
return str;
}
switch (name) {
case GL_VENDOR:
return (const GLubyte *) vendor;
case GL_RENDERER:
return (const GLubyte *) renderer;
case GL_VERSION:
return (const GLubyte *) ctx->VersionString;
case GL_EXTENSIONS:
if (ctx->API == API_OPENGL_CORE) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetString(GL_EXTENSIONS)");
return (const GLubyte *) 0;
}
return (const GLubyte *) ctx->Extensions.String;
case GL_SHADING_LANGUAGE_VERSION:
if (ctx->API == API_OPENGLES)
break;
return shading_language_version(ctx);
case GL_PROGRAM_ERROR_STRING_ARB:
if (ctx->API == API_OPENGL_COMPAT &&
(ctx->Extensions.ARB_fragment_program ||
ctx->Extensions.ARB_vertex_program)) {
return (const GLubyte *) ctx->Program.ErrorString;
}
break;
default:
break;
}
_mesa_error( ctx, GL_INVALID_ENUM, "glGetString" );
return (const GLubyte *) 0;
}
/**
* GL3
*/
const GLubyte * GLAPIENTRY
_mesa_GetStringi(GLenum name, GLuint index)
{
GET_CURRENT_CONTEXT(ctx);
if (!ctx)
return NULL;
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
switch (name) {
case GL_EXTENSIONS:
if (index >= _mesa_get_extension_count(ctx)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGetStringi(index=%u)", index);
return (const GLubyte *) 0;
}
return _mesa_get_enabled_extension(ctx, index);
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetStringi");
return (const GLubyte *) 0;
}
}
/**
* Return pointer-valued state, such as a vertex array pointer.
*
* \param pname names state to be queried
* \param params returns the pointer value
*
* \sa glGetPointerv().
*
* Tries to get the specified pointer via dd_function_table::GetPointerv,
* otherwise gets the specified pointer from the current context.
*/
void GLAPIENTRY
_mesa_GetPointerv( GLenum pname, GLvoid **params )
{
GET_CURRENT_CONTEXT(ctx);
const GLuint clientUnit = ctx->Array.ActiveTexture;
if (!params)
return;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
switch (pname) {
case GL_VERTEX_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POS].Ptr;
break;
case GL_NORMAL_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_NORMAL].Ptr;
break;
case GL_COLOR_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR0].Ptr;
break;
case GL_SECONDARY_COLOR_ARRAY_POINTER_EXT:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR1].Ptr;
break;
case GL_FOG_COORDINATE_ARRAY_POINTER_EXT:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_FOG].Ptr;
break;
case GL_INDEX_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Ptr;
break;
case GL_TEXTURE_COORD_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT && ctx->API != API_OPENGLES)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(clientUnit)].Ptr;
break;
case GL_EDGE_FLAG_ARRAY_POINTER:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_EDGEFLAG].Ptr;
break;
case GL_FEEDBACK_BUFFER_POINTER:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = ctx->Feedback.Buffer;
break;
case GL_SELECTION_BUFFER_POINTER:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
*params = ctx->Select.Buffer;
break;
case GL_POINT_SIZE_ARRAY_POINTER_OES:
if (ctx->API != API_OPENGLES)
goto invalid_pname;
*params = (GLvoid *) ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Ptr;
break;
case GL_DEBUG_CALLBACK_FUNCTION_ARB:
case GL_DEBUG_CALLBACK_USER_PARAM_ARB:
if (!_mesa_is_desktop_gl(ctx))
goto invalid_pname;
else
*params = _mesa_get_debug_state_ptr(ctx, pname);
break;
default:
goto invalid_pname;
}
return;
invalid_pname:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetPointerv" );
return;
}
/**
* Returns the current GL error code, or GL_NO_ERROR.
* \return current error code
*
* Returns __struct gl_contextRec::ErrorValue.
*/
GLenum GLAPIENTRY
_mesa_GetError( void )
{
GET_CURRENT_CONTEXT(ctx);
GLenum e = ctx->ErrorValue;
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
ctx->ErrorValue = (GLenum) GL_NO_ERROR;
ctx->ErrorDebugCount = 0;
return e;
}
/**
* Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR.
* \return current context status
*/
GLenum GLAPIENTRY
_mesa_GetGraphicsResetStatusARB( void )
{
GET_CURRENT_CONTEXT(ctx);
GLenum status = GL_NO_ERROR;
/* The ARB_robustness specification says:
*
* "If the reset notification behavior is NO_RESET_NOTIFICATION_ARB,
* then the implementation will never deliver notification of reset
* events, and GetGraphicsResetStatusARB will always return NO_ERROR."
*/
if (ctx->Const.ResetStrategy == GL_NO_RESET_NOTIFICATION_ARB) {
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because reset notifictation was not requested at context "
"creation.\n");
return GL_NO_ERROR;
}
if (ctx->Driver.GetGraphicsResetStatus) {
/* Query the reset status of this context from the driver core.
*/
status = ctx->Driver.GetGraphicsResetStatus(ctx);
mtx_lock(&ctx->Shared->Mutex);
/* If this context has not been affected by a GPU reset, check to see if
* some other context in the share group has been affected by a reset.
* If another context saw a reset but this context did not, assume that
* this context was not guilty.
*/
if (status != GL_NO_ERROR) {
ctx->Shared->ShareGroupReset = true;
} else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) {
status = GL_INNOCENT_CONTEXT_RESET_ARB;
}
ctx->ShareGroupReset = ctx->Shared->ShareGroupReset;
mtx_unlock(&ctx->Shared->Mutex);
}
if (!ctx->Driver.GetGraphicsResetStatus && (MESA_VERBOSE & VERBOSE_API))
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because the driver doesn't track reset status.\n");
return status;
}