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More GL_EXT_framebuffer_object: rename some things, added device driver hooks.

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This commit is contained in:
Brian Paul
2005-02-24 05:47:06 +00:00
parent 7b7d00ca62
commit 2c6f911e10
5 changed files with 290 additions and 102 deletions
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248
src/mesa/main/fbobject.c
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@@ -51,8 +51,8 @@
* Later, when the object ID is first bound, we replace the placeholder
* with the real frame/renderbuffer.
*/
static struct gl_frame_buffer_object DummyFramebuffer;
static struct gl_render_buffer_object DummyRenderbuffer;
static struct gl_framebuffer DummyFramebuffer;
static struct gl_renderbuffer DummyRenderbuffer;
#define IS_CUBE_FACE(TARGET) \
@@ -61,50 +61,115 @@ static struct gl_render_buffer_object DummyRenderbuffer;
/**
* Helper routine for getting a gl_render_buffer_object.
* Helper routine for getting a gl_renderbuffer.
*/
static struct gl_render_buffer_object *
static struct gl_renderbuffer *
lookup_renderbuffer(GLcontext *ctx, GLuint id)
{
struct gl_render_buffer_object *rb;
struct gl_renderbuffer *rb;
if (id == 0)
return NULL;
rb = (struct gl_render_buffer_object *)
rb = (struct gl_renderbuffer *)
_mesa_HashLookup(ctx->Shared->RenderBuffers, id);
return rb;
}
/**
* Helper routine for getting a gl_frame_buffer_object.
* Helper routine for getting a gl_framebuffer.
*/
static struct gl_frame_buffer_object *
static struct gl_framebuffer *
lookup_framebuffer(GLcontext *ctx, GLuint id)
{
struct gl_frame_buffer_object *fb;
struct gl_framebuffer *fb;
if (id == 0)
return NULL;
fb = (struct gl_frame_buffer_object *)
fb = (struct gl_framebuffer *)
_mesa_HashLookup(ctx->Shared->FrameBuffers, id);
return fb;
}
/**
* Allocate a new gl_render_buffer_object.
* XXX make this a device driver function.
* Allocate a new gl_framebuffer.
* This is the default function for ctx->Driver.NewFramebuffer().
*/
static struct gl_render_buffer_object *
new_renderbuffer(GLcontext *ctx, GLuint name)
struct gl_framebuffer *
_mesa_new_framebuffer(GLcontext *ctx, GLuint name)
{
struct gl_render_buffer_object *rb = CALLOC_STRUCT(gl_render_buffer_object);
struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
if (fb) {
fb->Name = name;
fb->RefCount = 1;
fb->Delete = _mesa_delete_framebuffer;
}
return fb;
}
/**
* Delete a gl_framebuffer.
* This is the default function for framebuffer->Delete().
*/
void
_mesa_delete_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
{
(void) ctx;
_mesa_free(fb);
}
/**
* Allocate the actual storage for a renderbuffer with the given format
* and dimensions.
* This is the default function for gl_renderbuffer->AllocStorage().
* All incoming parameters will have already been checked for errors.
* If memory allocate fails, the function must call
* _mesa_error(GL_OUT_OF_MEMORY) and then return.
* \return GL_TRUE for success, GL_FALSE for failure.
*/
static GLboolean
alloc_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
GLenum internalFormat, GLuint width, GLuint height)
{
/* First, free any existing storage */
if (rb->Data) {
_mesa_free(rb->Data);
}
/* Now, allocate new storage */
rb->Data = _mesa_malloc(width * height * 4); /* XXX fix size! */
if (rb->Data == NULL) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glRenderbufferStorageEXT");
return GL_FALSE;
}
/* We set these fields now if the allocation worked */
rb->Width = width;
rb->Height = height;
rb->InternalFormat = internalFormat;
return GL_TRUE;
}
/**
* Allocate a new gl_renderbuffer.
* This is the default function for ctx->Driver.NewRenderbuffer().
*/
struct gl_renderbuffer *
_mesa_new_renderbuffer(GLcontext *ctx, GLuint name)
{
struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer);
if (rb) {
rb->Name = name;
rb->RefCount = 1;
rb->Delete = _mesa_delete_renderbuffer;
rb->AllocStorage = alloc_renderbuffer_storage;
/* other fields are zero */
}
return rb;
@@ -112,27 +177,26 @@ new_renderbuffer(GLcontext *ctx, GLuint name)
/**
* Allocate a new gl_frame_buffer_object.
* XXX make this a device driver function.
* Delete a gl_framebuffer.
* This is the default function for framebuffer->Delete().
*/
static struct gl_frame_buffer_object *
new_framebuffer(GLcontext *ctx, GLuint name)
void
_mesa_delete_renderbuffer(GLcontext *ctx, struct gl_renderbuffer *rb)
{
struct gl_frame_buffer_object *fb = CALLOC_STRUCT(gl_frame_buffer_object);
if (fb) {
fb->Name = name;
fb->RefCount = 1;
(void) ctx;
if (rb->Data) {
_mesa_free(rb->Data);
}
return fb;
_mesa_free(rb);
}
/**
* Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
* gl_render_buffer_attachment object.
* gl_renderbuffer_attachment object.
*/
static struct gl_render_buffer_attachment *
get_attachment(GLcontext *ctx, GLenum attachment)
static struct gl_renderbuffer_attachment *
get_attachment(GLcontext *ctx, struct gl_framebuffer *fb, GLenum attachment)
{
GLuint i;
@@ -157,11 +221,11 @@ get_attachment(GLcontext *ctx, GLenum attachment)
if (i >= ctx->Const.MaxColorAttachments) {
return NULL;
}
return &ctx->CurrentFramebuffer->ColorAttachment[i];
return &fb->ColorAttachment[i];
case GL_DEPTH_ATTACHMENT_EXT:
return &ctx->CurrentFramebuffer->DepthAttachment;
return &fb->DepthAttachment;
case GL_STENCIL_ATTACHMENT_EXT:
return &ctx->CurrentFramebuffer->StencilAttachment;
return &fb->StencilAttachment;
default:
return NULL;
}
@@ -173,7 +237,7 @@ get_attachment(GLcontext *ctx, GLenum attachment)
* point. Update reference counts, etc.
*/
static void
remove_attachment(GLcontext *ctx, struct gl_render_buffer_attachment *att)
remove_attachment(GLcontext *ctx, struct gl_renderbuffer_attachment *att)
{
if (att->Type == GL_TEXTURE) {
ASSERT(att->Texture);
@@ -189,7 +253,7 @@ remove_attachment(GLcontext *ctx, struct gl_render_buffer_attachment *att)
ASSERT(!att->Texture);
att->Renderbuffer->RefCount--;
if (att->Renderbuffer->RefCount == 0) {
_mesa_free(att->Renderbuffer); /* XXX driver free */
att->Renderbuffer->Delete(ctx, att->Renderbuffer);
}
att->Renderbuffer = NULL;
}
@@ -204,7 +268,7 @@ remove_attachment(GLcontext *ctx, struct gl_render_buffer_attachment *att)
*/
static void
set_texture_attachment(GLcontext *ctx,
struct gl_render_buffer_attachment *att,
struct gl_renderbuffer_attachment *att,
struct gl_texture_object *texObj,
GLenum texTarget, GLuint level, GLuint zoffset)
{
@@ -221,6 +285,11 @@ set_texture_attachment(GLcontext *ctx,
att->Zoffset = zoffset;
att->Complete = GL_FALSE;
texObj->RefCount++;
/* XXX when we attach to a texture, we should probably set the
* att->Renderbuffer pointer to a "wrapper renderbuffer" which
* makes the texture image look like renderbuffer.
*/
}
@@ -230,12 +299,13 @@ set_texture_attachment(GLcontext *ctx,
*/
static void
set_renderbuffer_attachment(GLcontext *ctx,
struct gl_render_buffer_attachment *att,
struct gl_render_buffer_object *rb)
struct gl_renderbuffer_attachment *att,
struct gl_renderbuffer *rb)
{
remove_attachment(ctx, att);
att->Type = GL_RENDERBUFFER_EXT;
att->Renderbuffer = rb;
att->Texture = NULL; /* just to be safe */
att->Complete = GL_FALSE;
rb->RefCount++;
}
@@ -249,7 +319,7 @@ set_renderbuffer_attachment(GLcontext *ctx,
*/
static void
test_attachment_completeness(const GLcontext *ctx, GLenum format,
struct gl_render_buffer_attachment *att)
struct gl_renderbuffer_attachment *att)
{
assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
@@ -335,7 +405,7 @@ test_attachment_completeness(const GLcontext *ctx, GLenum format,
*/
static void
test_framebuffer_completeness(GLcontext *ctx,
struct gl_frame_buffer_object *fb)
struct gl_framebuffer *fb)
{
GLint i;
GLuint numImages, width, height;
@@ -348,7 +418,7 @@ test_framebuffer_completeness(GLcontext *ctx,
/* Start at -2 to more easily loop over all attachment points */
for (i = -2; i < ctx->Const.MaxColorAttachments; i++) {
struct gl_render_buffer_attachment *att;
struct gl_renderbuffer_attachment *att;
GLuint w, h;
GLenum f;
@@ -418,8 +488,8 @@ test_framebuffer_completeness(GLcontext *ctx,
/* Check that all DrawBuffers are present */
for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
if (fb->DrawBuffer[i] != GL_NONE) {
struct gl_render_buffer_attachment *att
= get_attachment(ctx, fb->DrawBuffer[i]);
struct gl_renderbuffer_attachment *att
= get_attachment(ctx, fb, fb->DrawBuffer[i]);
if (att->Type == GL_NONE) {
fb->Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
return;
@@ -429,8 +499,8 @@ test_framebuffer_completeness(GLcontext *ctx,
/* Check that the ReadBuffer is present */
if (fb->ReadBuffer != GL_NONE) {
struct gl_render_buffer_attachment *att
= get_attachment(ctx, fb->ReadBuffer);
struct gl_renderbuffer_attachment *att
= get_attachment(ctx, fb, fb->ReadBuffer);
if (att->Type == GL_NONE) {
fb->Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
return;
@@ -448,7 +518,7 @@ test_framebuffer_completeness(GLcontext *ctx,
GLboolean GLAPIENTRY
_mesa_IsRenderbufferEXT(GLuint renderbuffer)
{
const struct gl_render_buffer_object *rb;
const struct gl_renderbuffer *rb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
@@ -461,7 +531,7 @@ _mesa_IsRenderbufferEXT(GLuint renderbuffer)
void GLAPIENTRY
_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
{
struct gl_render_buffer_object *newRb, *oldRb;
struct gl_renderbuffer *newRb, *oldRb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -480,11 +550,12 @@ _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
}
if (!newRb) {
/* create new renderbuffer object */
newRb = new_renderbuffer(ctx, renderbuffer);
newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
if (!newRb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
return;
}
ASSERT(newRb->AllocStorage);
_mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
}
newRb->RefCount++;
@@ -497,7 +568,7 @@ _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
if (oldRb) {
oldRb->RefCount--;
if (oldRb->RefCount == 0) {
_mesa_free(oldRb); /* XXX device driver function */
oldRb->Delete(ctx, oldRb);
}
}
@@ -516,8 +587,8 @@ _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
ASSERT_OUTSIDE_BEGIN_END(ctx);
for (i = 0; i < n; i++) {
if (renderbuffers[i]) {
struct gl_render_buffer_object *rb;
if (renderbuffers[i] > 0) {
struct gl_renderbuffer *rb;
rb = lookup_renderbuffer(ctx, renderbuffers[i]);
if (rb) {
/* remove from hash table immediately, to free the ID */
@@ -529,7 +600,7 @@ _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
*/
rb->RefCount--;
if (rb->RefCount == 0) {
_mesa_free(rb); /* XXX call device driver function */
rb->Delete(ctx, rb);
}
}
}
@@ -603,9 +674,9 @@ base_internal_format(GLcontext *ctx, GLenum internalFormat)
case GL_STENCIL_INDEX16_EXT:
return GL_STENCIL_INDEX;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16_SGIX:
case GL_DEPTH_COMPONENT24_SGIX:
case GL_DEPTH_COMPONENT32_SGIX:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
return GL_DEPTH_COMPONENT;
/* XXX add floating point formats eventually */
default:
@@ -618,6 +689,7 @@ void GLAPIENTRY
_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
GLsizei width, GLsizei height)
{
struct gl_renderbuffer *rb;
GLenum baseFormat;
GET_CURRENT_CONTEXT(ctx);
@@ -645,27 +717,33 @@ _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
return;
}
/* XXX this check isn't in the spec, but seems necessary */
if (!ctx->CurrentRenderbuffer) {
rb = ctx->CurrentRenderbuffer;
if (!rb) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glRenderbufferStorageEXT");
return;
}
if (ctx->CurrentRenderbuffer->Data) {
/* XXX device driver free */
_mesa_free(ctx->CurrentRenderbuffer->Data);
/* Now allocate the storage */
ASSERT(rb->AllocStorage);
if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
/* No error - check/set fields now */
assert(rb->Width == width);
assert(rb->Height == height);
assert(rb->InternalFormat);
rb->_BaseFormat = baseFormat;
}
else {
/* Probably ran out of memory - clear the fields */
rb->Width = 0;
rb->Height = 0;
rb->InternalFormat = GL_NONE;
rb->_BaseFormat = GL_NONE;
}
/* 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;
ctx->CurrentRenderbuffer->_BaseFormat = baseFormat;
/* XXX if this renderbuffer is attached anywhere, invalidate attachment
* points???
*/
}
@@ -709,7 +787,7 @@ _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
GLboolean GLAPIENTRY
_mesa_IsFramebufferEXT(GLuint framebuffer)
{
const struct gl_frame_buffer_object *fb;
const struct gl_framebuffer *fb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
@@ -722,7 +800,7 @@ _mesa_IsFramebufferEXT(GLuint framebuffer)
void GLAPIENTRY
_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
{
struct gl_frame_buffer_object *newFb, *oldFb;
struct gl_framebuffer *newFb, *oldFb;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -741,7 +819,7 @@ _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
}
if (!newFb) {
/* create new framebuffer object */
newFb = new_framebuffer(ctx, framebuffer);
newFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
if (!newFb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
return;
@@ -758,7 +836,7 @@ _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
if (oldFb) {
oldFb->RefCount--;
if (oldFb->RefCount == 0) {
_mesa_free(oldFb); /* XXX device driver function */
oldFb->Delete(ctx, oldFb);
}
}
@@ -777,8 +855,8 @@ _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
ASSERT_OUTSIDE_BEGIN_END(ctx);
for (i = 0; i < n; i++) {
if (framebuffers[i]) {
struct gl_frame_buffer_object *fb;
if (framebuffers[i] > 0) {
struct gl_framebuffer *fb;
fb = lookup_framebuffer(ctx, framebuffers[i]);
if (fb) {
/* remove from hash table immediately, to free the ID */
@@ -790,7 +868,7 @@ _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
*/
fb->RefCount--;
if (fb->RefCount == 0) {
_mesa_free(fb); /* XXX call device driver function */
fb->Delete(ctx, fb);
}
}
}
@@ -903,7 +981,7 @@ void GLAPIENTRY
_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
struct gl_render_buffer_attachment *att;
struct gl_renderbuffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -914,7 +992,7 @@ _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
ASSERT(textarget == GL_TEXTURE_1D);
att = get_attachment(ctx, attachment);
att = get_attachment(ctx, ctx->CurrentFramebuffer, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture1DEXT(attachment)");
@@ -948,7 +1026,7 @@ void GLAPIENTRY
_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture, GLint level)
{
struct gl_render_buffer_attachment *att;
struct gl_renderbuffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -961,7 +1039,7 @@ _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
textarget == GL_TEXTURE_RECTANGLE_ARB ||
IS_CUBE_FACE(textarget));
att = get_attachment(ctx, attachment);
att = get_attachment(ctx, ctx->CurrentFramebuffer, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture2DEXT(attachment)");
@@ -999,7 +1077,7 @@ _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture,
GLint level, GLint zoffset)
{
struct gl_render_buffer_attachment *att;
struct gl_renderbuffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -1010,7 +1088,7 @@ _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
ASSERT(textarget == GL_TEXTURE_3D);
att = get_attachment(ctx, attachment);
att = get_attachment(ctx, ctx->CurrentFramebuffer, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferTexture1DEXT(attachment)");
@@ -1049,7 +1127,7 @@ _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
GLenum renderbufferTarget,
GLuint renderbuffer)
{
struct gl_render_buffer_attachment *att;
struct gl_renderbuffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -1071,7 +1149,7 @@ _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
return;
}
att = get_attachment(ctx, attachment);
att = get_attachment(ctx, ctx->CurrentFramebuffer, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glFramebufferRenderbufferEXT(attachment)");
@@ -1079,7 +1157,7 @@ _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
}
if (renderbuffer) {
struct gl_render_buffer_object *rb;
struct gl_renderbuffer *rb;
rb = lookup_renderbuffer(ctx, renderbuffer);
if (!rb) {
_mesa_error(ctx, GL_INVALID_VALUE,
@@ -1098,7 +1176,7 @@ void GLAPIENTRY
_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
GLenum pname, GLint *params)
{
const struct gl_render_buffer_attachment *att;
const struct gl_renderbuffer_attachment *att;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -1115,7 +1193,7 @@ _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
return;
}
att = get_attachment(ctx, attachment);
att = get_attachment(ctx, ctx->CurrentFramebuffer, attachment);
if (att == NULL) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetFramebufferAttachmentParameterivEXT(attachment)");