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|
/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 1999-2005 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
* BRIAN PAUL 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.
*/
/*
* Authors:
* Brian Paul
*/
#include "context.h"
#include "fbobject.h"
#include "hash.h"
#include "teximage.h"
#include "texstore.h"
#define IS_CUBE_FACE(TARGET) \
((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
(TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
/**
* Helper routine for getting a gl_render_buffer_object.
*/
static struct gl_render_buffer_object *
lookup_renderbuffer(GLcontext *ctx, GLuint id)
{
struct gl_render_buffer_object *rb;
if (!id == 0)
return NULL;
rb = (struct gl_render_buffer_object *)
_mesa_HashLookup(ctx->Shared->RenderBuffers, id);
return rb;
}
/**
* Helper routine for getting a gl_frame_buffer_object.
*/
static struct gl_frame_buffer_object *
lookup_framebuffer(GLcontext *ctx, GLuint id)
{
struct gl_frame_buffer_object *fb;
if (!id == 0)
return NULL;
fb = (struct gl_frame_buffer_object *)
_mesa_HashLookup(ctx->Shared->FrameBuffers, id);
return fb;
}
/**
* Allocate a new gl_render_buffer_object.
* XXX make this a device driver function.
*/
static struct gl_render_buffer_object *
new_renderbuffer(GLcontext *ctx, GLuint name)
{
struct gl_render_buffer_object *rb = CALLOC_STRUCT(gl_render_buffer_object);
if (rb) {
rb->Name = name;
rb->RefCount = 1;
/* other fields are zero */
}
return rb;
}
/**
* Allocate a new gl_frame_buffer_object.
* XXX make this a device driver function.
*/
static struct gl_frame_buffer_object *
new_framebuffer(GLcontext *ctx, GLuint name)
{
struct gl_frame_buffer_object *fb = CALLOC_STRUCT(gl_frame_buffer_object);
if (fb) {
fb->Name = name;
fb->RefCount = 1;
}
return fb;
}
static struct gl_render_buffer_attachment *
get_attachment(GLcontext *ctx, GLenum attachment)
{
GLuint i;
switch (attachment) {
case GL_COLOR_ATTACHMENT0_EXT:
case GL_COLOR_ATTACHMENT1_EXT:
case GL_COLOR_ATTACHMENT2_EXT:
case GL_COLOR_ATTACHMENT3_EXT:
case GL_COLOR_ATTACHMENT4_EXT:
case GL_COLOR_ATTACHMENT5_EXT:
case GL_COLOR_ATTACHMENT6_EXT:
case GL_COLOR_ATTACHMENT7_EXT:
case GL_COLOR_ATTACHMENT8_EXT:
case GL_COLOR_ATTACHMENT9_EXT:
case GL_COLOR_ATTACHMENT10_EXT:
case GL_COLOR_ATTACHMENT11_EXT:
case GL_COLOR_ATTACHMENT12_EXT:
case GL_COLOR_ATTACHMENT13_EXT:
case GL_COLOR_ATTACHMENT14_EXT:
case GL_COLOR_ATTACHMENT15_EXT:
i = attachment - GL_COLOR_ATTACHMENT0_EXT;
if (i >= ctx->Const.MaxColorAttachments) {
return NULL;
}
return &ctx->CurrentFramebuffer->ColorAttachment[i];
case GL_DEPTH_ATTACHMENT_EXT:
return &ctx->CurrentFramebuffer->DepthAttachment;
case GL_STENCIL_ATTACHMENT_EXT:
return &ctx->CurrentFramebuffer->StencilAttachment;
default:
return NULL;
}
}
static void
remove_attachment(GLcontext *ctx, struct gl_render_buffer_attachment *att)
{
if (att->Type == GL_TEXTURE) {
ASSERT(att->Texture);
ASSERT(!att->Renderbuffer);
att->Texture->RefCount--;
if (att->Texture->RefCount == 0) {
ctx->Driver.DeleteTexture(ctx, att->Texture);
}
att->Texture = NULL;
}
else if (att->Type == GL_RENDERBUFFER_EXT) {
ASSERT(att->Renderbuffer);
ASSERT(!att->Texture);
att->Renderbuffer->RefCount--;
if (att->Renderbuffer->RefCount == 0) {
_mesa_free(att->Renderbuffer); /* XXX driver free */
}
att->Renderbuffer = NULL;
}
att->Type = GL_NONE;
}
static void
set_texture_attachment(GLcontext *ctx,
struct gl_render_buffer_attachment *att,
struct gl_texture_object *texObj,
GLenum texTarget, GLuint level, GLuint zoffset)
{
remove_attachment(ctx, att);
att->Type = GL_TEXTURE;
att->Texture = texObj;
att->TextureLevel = level;
if (IS_CUBE_FACE(texTarget)) {
att->CubeMapFace = texTarget - GL_TEXTURE_CUBE_MAP_POSITIVE_X;
}
else {
att->CubeMapFace = 0;
}
att->Zoffset = zoffset;
texObj->RefCount++;
}
static void
set_renderbuffer_attachment(GLcontext *ctx,
struct gl_render_buffer_attachment *att,
struct gl_render_buffer_object *rb)
{
remove_attachment(ctx, att);
att->Type = GL_RENDERBUFFER_EXT;
att->Renderbuffer = rb;
rb->RefCount++;
}
GLboolean
_mesa_IsRenderbufferEXT(GLuint renderbuffer)
{
struct gl_render_buffer_object *rb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
rb = lookup_renderbuffer(ctx, renderbuffer);
return rb ? GL_TRUE : GL_FALSE;
}
void
_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
{
struct gl_render_buffer_object *newRb, *oldRb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glBindRenderbufferEXT(target)");
return;
}
if (renderbuffer) {
newRb = lookup_renderbuffer(ctx, renderbuffer);
if (!newRb) {
/* create new renderbuffer object */
newRb = new_renderbuffer(ctx, renderbuffer);
if (!newRb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
return;
}
}
newRb->RefCount++;
}
else {
newRb = NULL;
}
oldRb = ctx->CurrentRenderbuffer;
if (oldRb) {
oldRb->RefCount--;
if (oldRb->RefCount == 0) {
_mesa_free(oldRb); /* XXX device driver function */
}
}
ctx->CurrentRenderbuffer = newRb;
}
void
_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
{
GLint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
for (i = 0; i < n; i++) {
if (renderbuffers[i]) {
struct gl_render_buffer_object *rb;
rb = lookup_renderbuffer(ctx, renderbuffers[i]);
if (rb) {
/* remove from hash table immediately, to free the ID */
_mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
/* But the object will not be freed until it's no longer bound in
* any context.
*/
rb->RefCount--;
if (rb->RefCount == 0) {
_mesa_free(rb); /* XXX call device driver function */
}
}
}
}
}
void
_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
return;
}
if (!renderbuffers)
return;
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
for (i = 0; i < n; i++) {
struct gl_render_buffer_object *rb;
GLuint name = first + i;
rb = new_renderbuffer(ctx, name);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenRenderbuffersEXT");
return;
}
/* insert into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->RenderBuffers, name, rb);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
renderbuffers[i] = name;
}
}
static GLenum
base_internal_format(GLcontext *ctx, GLenum internalFormat)
{
switch (internalFormat) {
/*case GL_ALPHA:*/
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
return GL_ALPHA;
/*case GL_LUMINANCE:*/
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
return GL_LUMINANCE;
/*case GL_LUMINANCE_ALPHA:*/
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
return GL_LUMINANCE_ALPHA;
/*case GL_INTENSITY:*/
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
return GL_INTENSITY;
/*case GL_RGB:*/
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return GL_RGB;
/*case GL_RGBA:*/
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return GL_RGBA;
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
return GL_STENCIL_INDEX;
default:
; /* fallthrough */
}
if (ctx->Extensions.SGIX_depth_texture) {
switch (internalFormat) {
/*case GL_DEPTH_COMPONENT:*/
case GL_DEPTH_COMPONENT16_SGIX:
case GL_DEPTH_COMPONENT24_SGIX:
case GL_DEPTH_COMPONENT32_SGIX:
return GL_DEPTH_COMPONENT;
default:
; /* fallthrough */
}
}
return 0;
}
void
_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height)
{
GLenum baseFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM, "glRenderbufferStorageEXT(target)");
return;
}
baseFormat = base_internal_format(ctx, internalFormat);
if (baseFormat == 0) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glRenderbufferStorageEXT(internalFormat)");
return;
}
if (width < 1 || width > ctx->Const.MaxRenderbufferSize) {
_mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(width)");
return;
}
if (height < 1 || height > ctx->Const.MaxRenderbufferSize) {
_mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(height)");
return;
}
/* XXX this check isn't in the spec, but seems necessary */
if (!ctx->CurrentRenderbuffer) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glRenderbufferStorageEXT");
return;
}
if (ctx->CurrentRenderbuffer->Data) {
/* XXX device driver free */
_mesa_free(ctx->CurrentRenderbuffer->Data);
}
/* XXX device driver allocate, fix size */
ctx->CurrentRenderbuffer->Data = _mesa_malloc(width * height * 4);
if (ctx->CurrentRenderbuffer->Data == NULL) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glRenderbufferStorageEXT");
return;
}
ctx->CurrentRenderbuffer->InternalFormat = internalFormat;
ctx->CurrentRenderbuffer->Width = width;
ctx->CurrentRenderbuffer->Height = height;
}
void
_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetRenderbufferParameterivEXT(target)");
return;
}
if (!ctx->CurrentRenderbuffer) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetRenderbufferParameterivEXT");
return;
}
switch (pname) {
case GL_RENDERBUFFER_WIDTH_EXT:
*params = ctx->CurrentRenderbuffer->Width;
return;
case GL_RENDERBUFFER_HEIGHT_EXT:
*params = ctx->CurrentRenderbuffer->Height;
return;
case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
*params = ctx->CurrentRenderbuffer->InternalFormat;
return;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetRenderbufferParameterivEXT(target)");
return;
}
}
GLboolean
_mesa_IsFramebufferEXT(GLuint framebuffer)
{
struct gl_frame_buffer_object *fb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
fb = lookup_framebuffer(ctx, framebuffer);
return fb ? GL_TRUE : GL_FALSE;
}
void
_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
{
struct gl_frame_buffer_object *newFb, *oldFb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_FRAMEBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glBindFramebufferEXT(target)");
return;
}
if (framebuffer) {
newFb = lookup_framebuffer(ctx, framebuffer);
if (!newFb) {
/* create new framebuffer object */
newFb = new_framebuffer(ctx, framebuffer);
if (!newFb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
return;
}
}
newFb->RefCount++;
}
else {
newFb = NULL;
}
oldFb = ctx->CurrentFramebuffer;
if (oldFb) {
oldFb->RefCount--;
if (oldFb->RefCount == 0) {
_mesa_free(oldFb); /* XXX device driver function */
}
}
ctx->CurrentFramebuffer = newFb;
}
void
_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
{
GLint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
for (i = 0; i < n; i++) {
if (framebuffers[i]) {
struct gl_frame_buffer_object *fb;
fb = lookup_framebuffer(ctx, framebuffers[i]);
if (fb) {
/* remove from hash table immediately, to free the ID */
_mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
/* But the object will not be freed until it's no longer bound in
* any context.
*/
fb->RefCount--;
if (fb->RefCount == 0) {
_mesa_free(fb); /* XXX call device driver function */
}
}
}
}
}
void
_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
{
GET_CURRENT_CONTEXT(ctx);
GLuint first;
GLint i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
return;
}
if (!framebuffers)
return;
first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
for (i = 0; i < n; i++) {
struct gl_frame_buffer_object *fb;
GLuint name = first + i;
fb = new_framebuffer(ctx, name);
if (!fb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenFramebuffersEXT");
return;
}
/* insert into hash table */
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
_mesa_HashInsert(ctx->Shared->FrameBuffers, name, fb);
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
framebuffers[i] = name;
}
}
GLenum
_mesa_CheckFramebufferStatusEXT(GLenum target)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FRAMEBUFFER_STATUS_ERROR_EXT);
if (target != GL_FRAMEBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glCheckFramebufferStatus(target)");
return GL_FRAMEBUFFER_STATUS_ERROR_EXT;
}
/* return one of:
GL_FRAMEBUFFER_COMPLETE_EXT
GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT
GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
GL_FRAMEBUFFER_UNSUPPORTED_EXT
GL_FRAMEBUFFER_STATUS_ERROR_EXT
*/
return GL_FRAMEBUFFER_STATUS_ERROR_EXT;
}
/**
* Do error checking common to glFramebufferTexture1D/2D/3DEXT.
* \return GL_TRUE if any error, GL_FALSE otherwise
*/
static GLboolean
error_check_framebuffer_texture(GLcontext *ctx, GLuint dims,
GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
ASSERT(dims >= 1 && dims <= 3);
if (target != GL_FRAMEBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture%dDEXT(target)", dims);
return GL_TRUE;
}
if (ctx->CurrentFramebuffer == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glFramebufferTexture%dDEXT", dims);
return GL_TRUE;
}
/* only check textarget, level if texture ID is non-zero*/
if (texture) {
if ((dims == 1 && textarget != GL_TEXTURE_1D) ||
(dims == 3 && textarget != GL_TEXTURE_3D) ||
(dims == 2 && textarget != GL_TEXTURE_2D &&
textarget != GL_TEXTURE_RECTANGLE_ARB &&
!IS_CUBE_FACE(textarget))) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture%dDEXT(textarget)", dims);
return GL_TRUE;
}
if ((level < 0) || level >= _mesa_max_texture_levels(ctx, textarget)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture%dDEXT(level)", dims);
return GL_TRUE;
}
}
return GL_FALSE;
}
void
_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
struct gl_render_buffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (error_check_framebuffer_texture(ctx, 1, target, attachment,
textarget, texture, level))
return;
ASSERT(textarget == GL_TEXTURE_1D);
att = get_attachment(ctx, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture1DEXT(attachment)");
return;
}
if (texture) {
struct gl_texture_object *texObj = (struct gl_texture_object *)
_mesa_HashLookup(ctx->Shared->TexObjects, texture);
if (!texObj) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture1DEXT(texture)");
return;
}
if (texObj->Target != textarget) {
_mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */
"glFramebufferTexture1DEXT(texture target)");
return;
}
set_texture_attachment(ctx, att, texObj, textarget, level, 0);
}
else {
remove_attachment(ctx, att);
}
/* XXX call a driver function to signal new attachment? */
}
void
_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
struct gl_render_buffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (error_check_framebuffer_texture(ctx, 2, target, attachment,
textarget, texture, level))
return;
ASSERT(textarget == GL_TEXTURE_2D ||
textarget == GL_TEXTURE_RECTANGLE_ARB ||
IS_CUBE_FACE(textarget));
att = get_attachment(ctx, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture2DEXT(attachment)");
return;
}
if (texture) {
struct gl_texture_object *texObj = (struct gl_texture_object *)
_mesa_HashLookup(ctx->Shared->TexObjects, texture);
if (!texObj) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture2DEXT(texture)");
return;
}
if ((texObj->Target == GL_TEXTURE_2D && textarget != GL_TEXTURE_2D) ||
(texObj->Target == GL_TEXTURE_RECTANGLE_ARB
&& textarget != GL_TEXTURE_RECTANGLE_ARB) ||
(texObj->Target == GL_TEXTURE_CUBE_MAP
&& !IS_CUBE_FACE(textarget))) {
_mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */
"glFramebufferTexture2DEXT(texture target)");
return;
}
set_texture_attachment(ctx, att, texObj, textarget, level, 0);
}
else {
remove_attachment(ctx, att);
}
}
void
_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture,
GLint level, GLint zoffset)
{
struct gl_render_buffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (error_check_framebuffer_texture(ctx, 3, target, attachment,
textarget, texture, level))
return;
ASSERT(textarget == GL_TEXTURE_3D);
att = get_attachment(ctx, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture1DEXT(attachment)");
return;
}
if (texture) {
struct gl_texture_object *texObj = (struct gl_texture_object *)
_mesa_HashLookup(ctx->Shared->TexObjects, texture);
if (!texObj) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture3DEXT(texture)");
return;
}
if (texObj->Target != textarget) {
_mesa_error(ctx, GL_INVALID_OPERATION, /* XXX correct error? */
"glFramebufferTexture3DEXT(texture target)");
return;
}
if (zoffset >= texObj->Image[0][level]->Depth) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferTexture3DEXT(zoffset)");
return;
}
set_texture_attachment(ctx, att, texObj, textarget, level, zoffset);
}
else {
remove_attachment(ctx, att);
}
}
void
_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
GLenum renderbufferTarget,
GLuint renderbuffer)
{
struct gl_render_buffer_object *rb;
struct gl_render_buffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_FRAMEBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(target)");
return;
}
if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(renderbufferTarget)");
return;
}
if (ctx->CurrentFramebuffer == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
return;
}
if (renderbuffer) {
rb = lookup_renderbuffer(ctx, renderbuffer);
if (!rb) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glFramebufferRenderbufferEXT(renderbuffer)");
return;
}
}
else {
rb = NULL; /* default renderbuffer */
}
att = get_attachment(ctx, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(attachment)");
return;
}
remove_attachment(ctx, att);
set_renderbuffer_attachment(ctx, att, rb);
}
void
_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
GLenum pname, GLint *params)
{
const struct gl_render_buffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target != GL_FRAMEBUFFER_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(target)");
return;
}
if (ctx->CurrentFramebuffer == NULL) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetFramebufferAttachmentParameterivEXT");
return;
}
att = get_attachment(ctx, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(attachment)");
return;
}
switch (pname) {
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
*params = att->Type;
return;
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
if (att->Type == GL_RENDERBUFFER_EXT) {
*params = att->Renderbuffer->Name;
}
else if (att->Type == GL_TEXTURE) {
*params = att->Texture->Name;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
if (att->Type == GL_TEXTURE) {
*params = att->TextureLevel;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
if (att->Type == GL_TEXTURE) {
*params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
return;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
if (att->Type == GL_TEXTURE) {
*params = att->Zoffset;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(pname)");
}
return;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(pname)");
return;
}
}
void
_mesa_GenerateMipmapEXT(GLenum target)
{
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
case GL_TEXTURE_CUBE_MAP:
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
texObj = _mesa_select_tex_object(ctx, texUnit, target);
/* XXX this might not handle cube maps correctly */
_mesa_generate_mipmap(ctx, target, texUnit, texObj);
}
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