/*
* Mesa 3-D graphics library
- * Version: 6.3
+ * Version: 6.5
*
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
if (fb) {
fb->Name = name;
fb->RefCount = 1;
- fb->Delete = _mesa_destroy_framebuffer;
fb->ColorDrawBuffer[0] = GL_COLOR_ATTACHMENT0_EXT;
fb->_ColorDrawBufferMask[0] = BUFFER_BIT_COLOR0;
fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
- fb->_ColorReadBufferMask = BUFFER_BIT_COLOR0;
+ fb->_ColorReadBufferIndex = BUFFER_COLOR0;
fb->Delete = _mesa_destroy_framebuffer;
}
return fb;
/**
- * Initialize a gl_framebuffer object.
+ * Initialize a gl_framebuffer object. Typically used to initialize
+ * window system-created framebuffers, not user-created framebuffers.
* \sa _mesa_create_framebuffer
*/
void
fb->ColorDrawBuffer[0] = GL_BACK;
fb->_ColorDrawBufferMask[0] = BUFFER_BIT_BACK_LEFT;
fb->ColorReadBuffer = GL_BACK;
- fb->_ColorReadBufferMask = BUFFER_BIT_BACK_LEFT;
+ fb->_ColorReadBufferIndex = BUFFER_BACK_LEFT;
}
else {
fb->ColorDrawBuffer[0] = GL_FRONT;
fb->_ColorDrawBufferMask[0] = BUFFER_BIT_FRONT_LEFT;
fb->ColorReadBuffer = GL_FRONT;
- fb->_ColorReadBufferMask = BUFFER_BIT_FRONT_LEFT;
+ fb->_ColorReadBufferIndex = BUFFER_FRONT_LEFT;
}
fb->Delete = _mesa_destroy_framebuffer;
+ fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
compute_depth_max(fb);
}
-/**
- * Create/attach software-based renderbuffers to the given framebuffer.
- * This is a helper routine for device drivers. Drivers can just as well
- * call the individual _mesa_add_*_renderbuffer() routines directly.
- */
-void
-_mesa_add_soft_renderbuffers(struct gl_framebuffer *fb,
- GLboolean color,
- GLboolean depth,
- GLboolean stencil,
- GLboolean accum,
- GLboolean alpha,
- GLboolean aux)
-{
- GLboolean frontLeft = GL_TRUE;
- GLboolean backLeft = fb->Visual.doubleBufferMode;
- GLboolean frontRight = fb->Visual.stereoMode;
- GLboolean backRight = fb->Visual.stereoMode && fb->Visual.doubleBufferMode;
-
- if (color) {
- if (fb->Visual.rgbMode) {
- assert(fb->Visual.redBits == fb->Visual.greenBits);
- assert(fb->Visual.redBits == fb->Visual.blueBits);
- _mesa_add_color_renderbuffers(NULL, fb,
- fb->Visual.redBits,
- fb->Visual.alphaBits,
- frontLeft, backLeft,
- frontRight, backRight);
- }
- else {
- _mesa_add_color_index_renderbuffers(NULL, fb,
- fb->Visual.indexBits,
- frontLeft, backLeft,
- frontRight, backRight);
- }
- }
-
- if (depth) {
- assert(fb->Visual.depthBits > 0);
- _mesa_add_depth_renderbuffer(NULL, fb, fb->Visual.depthBits);
- }
-
- if (stencil) {
- assert(fb->Visual.stencilBits > 0);
- _mesa_add_stencil_renderbuffer(NULL, fb, fb->Visual.stencilBits);
- }
-
- if (accum) {
- assert(fb->Visual.rgbMode);
- assert(fb->Visual.accumRedBits > 0);
- assert(fb->Visual.accumGreenBits > 0);
- assert(fb->Visual.accumBlueBits > 0);
- _mesa_add_accum_renderbuffer(NULL, fb,
- fb->Visual.accumRedBits,
- fb->Visual.accumGreenBits,
- fb->Visual.accumBlueBits,
- fb->Visual.accumAlphaBits);
- }
-
- if (aux) {
- assert(fb->Visual.rgbMode);
- assert(fb->Visual.numAuxBuffers > 0);
- _mesa_add_aux_renderbuffers(NULL, fb, fb->Visual.redBits,
- fb->Visual.numAuxBuffers);
- }
-
-#if 1
- if (alpha) {
- assert(fb->Visual.rgbMode);
- assert(fb->Visual.alphaBits > 0);
- _mesa_add_alpha_renderbuffers(NULL, fb, fb->Visual.alphaBits,
- frontLeft, backLeft,
- frontRight, backRight);
- }
-#endif
-
-#if 0
- if (multisample) {
- /* maybe someday */
- }
-#endif
-}
-
-
/**
* Deallocate buffer and everything attached to it.
+ * Typically called via the gl_framebuffer->Delete() method.
*/
void
-_mesa_destroy_framebuffer(struct gl_framebuffer *buffer)
+_mesa_destroy_framebuffer(struct gl_framebuffer *fb)
{
- if (buffer) {
- _mesa_free_framebuffer_data(buffer);
- FREE(buffer);
+ if (fb) {
+ _mesa_free_framebuffer_data(fb);
+ FREE(fb);
}
}
/**
* The glGet queries of the framebuffer red/green/blue size, stencil size,
* etc. are satisfied by the fields of ctx->DrawBuffer->Visual. These can
- * change depending on the renderbuffer bindings. This function update's
+ * change depending on the renderbuffer bindings. This function updates
* the given framebuffer's Visual from the current renderbuffer bindings.
* This is only intended for user-created framebuffers.
*/
if (fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
fb->Visual.redBits
- = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->ComponentSizes[0];
+ = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->RedBits;
fb->Visual.greenBits
- = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->ComponentSizes[1];
+ = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->GreenBits;
fb->Visual.blueBits
- = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->ComponentSizes[2];
+ = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->BlueBits;
fb->Visual.alphaBits
- = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->ComponentSizes[3];
+ = fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer->AlphaBits;
fb->Visual.rgbBits
= fb->Visual.redBits + fb->Visual.greenBits + fb->Visual.blueBits;
fb->Visual.floatMode = GL_FALSE;
if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
fb->Visual.haveDepthBuffer = GL_TRUE;
fb->Visual.depthBits
- = fb->Attachment[BUFFER_DEPTH].Renderbuffer->ComponentSizes[0];
+ = fb->Attachment[BUFFER_DEPTH].Renderbuffer->DepthBits;
}
if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
fb->Visual.haveStencilBuffer = GL_TRUE;
fb->Visual.stencilBits
- = fb->Attachment[BUFFER_STENCIL].Renderbuffer->ComponentSizes[0];
+ = fb->Attachment[BUFFER_STENCIL].Renderbuffer->StencilBits;
}
compute_depth_max(fb);
}
-/**
- * Given a framebuffer and a buffer bit (like BUFFER_BIT_FRONT_LEFT), return
- * the corresponding renderbuffer.
- */
-static struct gl_renderbuffer *
-get_renderbuffer(struct gl_framebuffer *fb, GLuint bufferBit)
-{
- GLuint index;
- for (index = 0; index < BUFFER_COUNT; index++) {
- if ((1 << index) == bufferBit) {
- return fb->Attachment[index].Renderbuffer;
- }
- }
- _mesa_problem(NULL, "Bad bufferBit in get_renderbuffer");
- return NULL;
-}
-
-
/**
* Update state related to the current draw/read framebuffers.
+ * Specifically, update these framebuffer fields:
+ * _ColorDrawBuffers
+ * _NumColorDrawBuffers
+ * _ColorReadBuffer
* If the current framebuffer is user-created, make sure it's complete.
+ * The following functions can effect this state: glReadBuffer,
+ * glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT.
*/
void
_mesa_update_framebuffer(GLcontext *ctx)
_mesa_test_framebuffer_completeness(ctx, fb);
/*
- * Update the list of drawing renderbuffer pointers.
+ * Update the list of color drawing renderbuffer pointers.
* Later, when we're rendering we'll loop from 0 to _NumColorDrawBuffers
- * writing colors. We have a loop because glDrawBuffer(GL_FRONT_AND_BACK)
- * can specify writing to two or four color buffers.
+ * writing colors. We need the inner loop here because
+ * glDrawBuffer(GL_FRONT_AND_BACK) can specify writing to two or four
+ * color buffers (for example).
*/
for (output = 0; output < ctx->Const.MaxDrawBuffers; output++) {
- GLuint bufferMask = fb->_ColorDrawBufferMask[output];
+ GLbitfield bufferMask = fb->_ColorDrawBufferMask[output];
GLuint count = 0;
- GLuint bufferBit;
- /* for each bit that's set in the bufferMask... */
- for (bufferBit = 1; bufferMask; bufferBit <<= 1) {
+ GLuint i;
+ for (i = 0; bufferMask && i < BUFFER_COUNT; i++) {
+ const GLuint bufferBit = 1 << i;
if (bufferBit & bufferMask) {
- struct gl_renderbuffer *rb = get_renderbuffer(fb, bufferBit);
+ struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
if (rb) {
fb->_ColorDrawBuffers[output][count] = rb;
- fb->_ColorDrawBit[output][count] = bufferBit;
count++;
}
else {
}
/*
- * Update the read renderbuffer pointer.
+ * Update the color read renderbuffer pointer.
* Unlike the DrawBuffer, we can only read from one (or zero) color buffers.
*/
- if (fb->_ColorReadBufferMask == 0x0)
+ if (fb->_ColorReadBufferIndex == -1) {
fb->_ColorReadBuffer = NULL; /* legal! */
- else
- fb->_ColorReadBuffer = get_renderbuffer(fb, fb->_ColorReadBufferMask);
-
+ }
+ else {
+ ASSERT(fb->_ColorReadBufferIndex >= 0);
+ ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);
+ fb->_ColorReadBuffer
+ = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
+ }
compute_depth_max(fb);
}
projects / mesa.git / blobdiff