+++ /dev/null
-
-#include "main/mtypes.h"
-#include "main/formats.h"
-#include "main/renderbuffer.h"
-#include "main/imports.h"
-#include "drirenderbuffer.h"
-
-
-/**
- * This will get called when a window (gl_framebuffer) is resized (probably
- * via driUpdateFramebufferSize(), below).
- * Just update width, height and internal format fields for now.
- * There's usually no memory allocation above because the present
- * DRI drivers use statically-allocated full-screen buffers. If that's not
- * the case for a DRI driver, a different AllocStorage method should
- * be used.
- */
-static GLboolean
-driRenderbufferStorage(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- rb->Width = width;
- rb->Height = height;
- rb->InternalFormat = internalFormat;
- return GL_TRUE;
-}
-
-
-static void
-driDeleteRenderbuffer(struct gl_renderbuffer *rb)
-{
- /* don't free rb->Data Chances are it's a memory mapped region for
- * the dri drivers.
- */
- free(rb);
-}
-
-
-/**
- * Allocate a new driRenderbuffer object.
- * Individual drivers are free to implement different versions of
- * this function.
- *
- * At this time, this function can only be used for window-system
- * renderbuffers, not user-created RBOs.
- *
- * \param format Either GL_RGBA, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24,
- * GL_DEPTH_COMPONENT32, or GL_STENCIL_INDEX8_EXT (for now).
- * \param addr address in main memory of the buffer. Probably a memory
- * mapped region.
- * \param cpp chars or bytes per pixel
- * \param offset start of renderbuffer with respect to start of framebuffer
- * \param pitch pixels per row
- */
-driRenderbuffer *
-driNewRenderbuffer(gl_format format, GLvoid *addr,
- GLint cpp, GLint offset, GLint pitch,
- __DRIdrawable *dPriv)
-{
- driRenderbuffer *drb;
-
- assert(cpp > 0);
- assert(pitch > 0);
-
- drb = calloc(1, sizeof(driRenderbuffer));
- if (drb) {
- const GLuint name = 0;
-
- _mesa_init_renderbuffer(&drb->Base, name);
-
- /* Make sure we're using a null-valued GetPointer routine */
- assert(drb->Base.GetPointer(NULL, &drb->Base, 0, 0) == NULL);
-
- switch (format) {
- case MESA_FORMAT_ARGB8888:
- if (cpp == 2) {
- /* override format */
- format = MESA_FORMAT_RGB565;
- }
- drb->Base.DataType = GL_UNSIGNED_BYTE;
- break;
- case MESA_FORMAT_Z16:
- /* Depth */
- /* we always Get/Put 32-bit Z values */
- drb->Base.DataType = GL_UNSIGNED_INT;
- assert(cpp == 2);
- break;
- case MESA_FORMAT_Z32:
- /* Depth */
- /* we always Get/Put 32-bit Z values */
- drb->Base.DataType = GL_UNSIGNED_INT;
- assert(cpp == 4);
- break;
- case MESA_FORMAT_Z24_S8:
- drb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
- assert(cpp == 4);
- break;
- case MESA_FORMAT_S8_Z24:
- drb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
- assert(cpp == 4);
- break;
- case MESA_FORMAT_S8:
- /* Stencil */
- drb->Base.DataType = GL_UNSIGNED_BYTE;
- break;
- default:
- _mesa_problem(NULL, "Bad format 0x%x in driNewRenderbuffer", format);
- return NULL;
- }
-
- drb->Base.Format = format;
-
- drb->Base.InternalFormat =
- drb->Base._BaseFormat = _mesa_get_format_base_format(format);
-
- drb->Base.AllocStorage = driRenderbufferStorage;
- drb->Base.Delete = driDeleteRenderbuffer;
-
- drb->Base.Data = addr;
-
- /* DRI renderbuffer-specific fields: */
- drb->dPriv = dPriv;
- drb->offset = offset;
- drb->pitch = pitch;
- drb->cpp = cpp;
-
- /* may be changed if page flipping is active: */
- drb->flippedOffset = offset;
- drb->flippedPitch = pitch;
- drb->flippedData = addr;
- }
- return drb;
-}
-
-
-/**
- * Update the front and back renderbuffers' flippedPitch/Offset/Data fields.
- * If stereo, flip both the left and right pairs.
- * This is used when we do double buffering via page flipping.
- * \param fb the framebuffer we're page flipping
- * \param flipped if true, set flipped values, else set non-flipped values
- */
-void
-driFlipRenderbuffers(struct gl_framebuffer *fb, GLboolean flipped)
-{
- const GLuint count = fb->Visual.stereoMode ? 2 : 1;
- GLuint lr; /* left or right */
-
- /* we shouldn't really call this function if single-buffered, but
- * play it safe.
- */
- if (!fb->Visual.doubleBufferMode)
- return;
-
- for (lr = 0; lr < count; lr++) {
- GLuint frontBuf = (lr == 0) ? BUFFER_FRONT_LEFT : BUFFER_FRONT_RIGHT;
- GLuint backBuf = (lr == 0) ? BUFFER_BACK_LEFT : BUFFER_BACK_RIGHT;
- driRenderbuffer *front_drb
- = (driRenderbuffer *) fb->Attachment[frontBuf].Renderbuffer;
- driRenderbuffer *back_drb
- = (driRenderbuffer *) fb->Attachment[backBuf].Renderbuffer;
-
- if (flipped) {
- front_drb->flippedOffset = back_drb->offset;
- front_drb->flippedPitch = back_drb->pitch;
- front_drb->flippedData = back_drb->Base.Data;
- back_drb->flippedOffset = front_drb->offset;
- back_drb->flippedPitch = front_drb->pitch;
- back_drb->flippedData = front_drb->Base.Data;
- }
- else {
- front_drb->flippedOffset = front_drb->offset;
- front_drb->flippedPitch = front_drb->pitch;
- front_drb->flippedData = front_drb->Base.Data;
- back_drb->flippedOffset = back_drb->offset;
- back_drb->flippedPitch = back_drb->pitch;
- back_drb->flippedData = back_drb->Base.Data;
- }
- }
-}
+++ /dev/null
-
-/**
- * A driRenderbuffer is dervied from gl_renderbuffer.
- * It describes a color buffer (front or back), a depth buffer, or stencil
- * buffer etc.
- * Specific to DRI drivers are the offset and pitch fields.
- */
-
-
-#ifndef DRIRENDERBUFFER_H
-#define DRIRENDERBUFFER_H
-
-#include "main/mtypes.h"
-#include "main/formats.h"
-#include "dri_util.h"
-
-
-typedef struct {
- struct gl_renderbuffer Base;
-
- /* Chars or bytes per pixel. If Z and Stencil are stored together this
- * will typically be 32 whether this a depth or stencil renderbuffer.
- */
- GLint cpp;
-
- /* Buffer position and pitch (row stride). Recall that for today's DRI
- * drivers, we have statically allocated color/depth/stencil buffers.
- * So this information describes the whole screen, not just a window.
- * To address pixels in a window, we need to know the window's position
- * and size with respect to the screen.
- */
- GLint offset; /* in bytes */
- GLint pitch; /* in pixels */
-
- /* If the driver can do page flipping (full-screen double buffering)
- * the current front/back buffers may get swapped.
- * If page flipping is disabled, these fields will be identical to
- * the offset/pitch/Data above.
- * If page flipping is enabled, and this is the front(back) renderbuffer,
- * flippedOffset/Pitch/Data will have the back(front) renderbuffer's values.
- */
- GLint flippedOffset;
- GLint flippedPitch;
- GLvoid *flippedData; /* mmap'd address of buffer memory, if used */
-
- /* Pointer to corresponding __DRIdrawable. This is used to compute
- * the window's position within the framebuffer.
- */
- __DRIdrawable *dPriv;
-
- /* XXX this is for radeon/r200 only. We should really create a new
- * r200Renderbuffer class, derived from this class... not a huge deal.
- */
- GLboolean depthHasSurface;
-} driRenderbuffer;
-
-
-extern driRenderbuffer *
-driNewRenderbuffer(gl_format format, GLvoid *addr,
- GLint cpp, GLint offset, GLint pitch,
- __DRIdrawable *dPriv);
-
-extern void
-driFlipRenderbuffers(struct gl_framebuffer *fb, GLboolean flipped);
-
-
-extern void
-driUpdateFramebufferSize(struct gl_context *ctx, const __DRIdrawable *dPriv);
-
-
-#endif /* DRIRENDERBUFFER_H */
projects / mesa.git / commitdiff