/*
* Mesa 3-D graphics library
- * Version: 6.5
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* 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.
+ * 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 "main/formats.h"
#include "main/mtypes.h"
#include "main/renderbuffer.h"
+#include "swrast/s_context.h"
#include "swrast/s_renderbuffer.h"
-
-/**
- * This is the default software fallback for gl_renderbuffer's span
- * access functions.
- *
- * The assumptions are that rb->Data will be a pointer to (0,0), that pixels
- * are packed in the type of rb->Format, and that subsequent rows appear
- * rb->RowStride pixels later.
- */
-void
-_swrast_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
-{
- switch (rb->Format) {
- case MESA_FORMAT_RGB888:
- rb->DataType = GL_UNSIGNED_BYTE;
- break;
-
- case MESA_FORMAT_RGBA8888:
- case MESA_FORMAT_RGBA8888_REV:
- rb->DataType = GL_UNSIGNED_BYTE;
- break;
-
- case MESA_FORMAT_R8:
- rb->DataType = GL_UNSIGNED_BYTE;
-
- break;
-
- case MESA_FORMAT_GR88:
- rb->DataType = GL_UNSIGNED_BYTE;
- break;
-
- case MESA_FORMAT_R16:
- rb->DataType = GL_UNSIGNED_SHORT;
-
- break;
-
- case MESA_FORMAT_RG1616:
- rb->DataType = GL_UNSIGNED_SHORT;
- break;
-
- case MESA_FORMAT_SIGNED_RGBA_16:
- rb->DataType = GL_SHORT;
- break;
-
- case MESA_FORMAT_S8:
- rb->DataType = GL_UNSIGNED_BYTE;
- break;
-
- case MESA_FORMAT_Z16:
- rb->DataType = GL_UNSIGNED_SHORT;
- break;
-
- case MESA_FORMAT_Z32:
- case MESA_FORMAT_X8_Z24:
- case MESA_FORMAT_Z24_X8:
- rb->DataType = GL_UNSIGNED_INT;
- break;
-
- case MESA_FORMAT_Z24_S8:
- case MESA_FORMAT_S8_Z24:
- rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
- break;
-
- case MESA_FORMAT_RGBA_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- case MESA_FORMAT_INTENSITY_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- case MESA_FORMAT_LUMINANCE_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- case MESA_FORMAT_ALPHA_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- case MESA_FORMAT_RG_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- case MESA_FORMAT_R_FLOAT32:
- rb->DataType = GL_FLOAT;
- break;
-
- default:
- break;
- }
-}
-
/**
* This is a software fallback for the gl_renderbuffer->AllocStorage
* function.
GLenum internalFormat,
GLuint width, GLuint height)
{
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+ GLuint bpp;
+
switch (internalFormat) {
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
- rb->Format = MESA_FORMAT_RGB888;
+ rb->Format = MESA_FORMAT_BGR_UNORM8;
break;
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA12:
#endif
if (_mesa_little_endian())
- rb->Format = MESA_FORMAT_RGBA8888_REV;
+ rb->Format = MESA_FORMAT_R8G8B8A8_UNORM;
else
- rb->Format = MESA_FORMAT_RGBA8888;
+ rb->Format = MESA_FORMAT_A8B8G8R8_UNORM;
break;
case GL_RGBA16:
case GL_RGBA16_SNORM:
/* for accum buffer */
- rb->Format = MESA_FORMAT_SIGNED_RGBA_16;
+ rb->Format = MESA_FORMAT_RGBA_SNORM16;
break;
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
- rb->Format = MESA_FORMAT_S8;
+ rb->Format = MESA_FORMAT_S_UINT8;
break;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
- rb->Format = MESA_FORMAT_Z16;
+ rb->Format = MESA_FORMAT_Z_UNORM16;
break;
case GL_DEPTH_COMPONENT24:
- rb->Format = MESA_FORMAT_X8_Z24;
+ rb->Format = MESA_FORMAT_Z24_UNORM_X8_UINT;
break;
case GL_DEPTH_COMPONENT32:
- rb->Format = MESA_FORMAT_Z32;
+ rb->Format = MESA_FORMAT_Z_UNORM32;
break;
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
- rb->Format = MESA_FORMAT_Z24_S8;
+ rb->Format = MESA_FORMAT_S8_UINT_Z24_UNORM;
break;
default:
/* unsupported format */
return GL_FALSE;
}
- _swrast_set_renderbuffer_accessors(rb);
-
- ASSERT(rb->DataType);
+ bpp = _mesa_get_format_bytes(rb->Format);
/* free old buffer storage */
- if (rb->Data) {
- free(rb->Data);
- rb->Data = NULL;
- }
+ free(srb->Buffer);
+ srb->Buffer = NULL;
- rb->RowStrideBytes = width * _mesa_get_format_bytes(rb->Format);
+ srb->RowStride = width * bpp;
if (width > 0 && height > 0) {
/* allocate new buffer storage */
- rb->Data = malloc(width * height * _mesa_get_format_bytes(rb->Format));
+ srb->Buffer = malloc(srb->RowStride * height);
- if (rb->Data == NULL) {
+ if (srb->Buffer == NULL) {
rb->Width = 0;
rb->Height = 0;
_mesa_error(ctx, GL_OUT_OF_MEMORY,
"software renderbuffer allocation (%d x %d x %d)",
- width, height, _mesa_get_format_bytes(rb->Format));
+ width, height, bpp);
return GL_FALSE;
}
}
}
else {
/* the internalFormat should have been error checked long ago */
- ASSERT(rb->_BaseFormat);
+ assert(rb->_BaseFormat);
}
return GL_TRUE;
}
+/**
+ * Called via gl_renderbuffer::Delete()
+ */
+static void
+soft_renderbuffer_delete(struct gl_context *ctx, struct gl_renderbuffer *rb)
+{
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+
+ free(srb->Buffer);
+ srb->Buffer = NULL;
+ _mesa_delete_renderbuffer(ctx, rb);
+}
+
+
void
_swrast_map_soft_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **out_map,
- GLint *out_stride)
+ GLint *out_stride,
+ bool flip_y)
{
- GLubyte *map = rb->Data;
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+ GLubyte *map = srb->Buffer;
int cpp = _mesa_get_format_bytes(rb->Format);
int stride = rb->Width * cpp;
- ASSERT(rb->Data);
+ if (!map) {
+ *out_map = NULL;
+ *out_stride = 0;
+ }
map += y * stride;
map += x * cpp;
struct gl_renderbuffer *
_swrast_new_soft_renderbuffer(struct gl_context *ctx, GLuint name)
{
- struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, name);
- if (rb) {
- rb->AllocStorage = soft_renderbuffer_storage;
+ struct swrast_renderbuffer *srb = CALLOC_STRUCT(swrast_renderbuffer);
+ if (srb) {
+ _mesa_init_renderbuffer(&srb->Base, name);
+ srb->Base.AllocStorage = soft_renderbuffer_storage;
+ srb->Base.Delete = soft_renderbuffer_delete;
}
- return rb;
+ return &srb->Base;
}
assert(fb->Attachment[b].Renderbuffer == NULL);
- rb = _mesa_new_renderbuffer(ctx, 0);
+ rb = ctx->Driver.NewRenderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating color buffer");
return GL_FALSE;
rb->InternalFormat = GL_RGBA;
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, b, rb);
+ _mesa_attach_and_own_rb(fb, b, rb);
}
return GL_TRUE;
assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer == NULL);
- rb = _mesa_new_renderbuffer(ctx, 0);
+ rb = _swrast_new_soft_renderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating depth buffer");
return GL_FALSE;
}
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
+ _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, rb);
return GL_TRUE;
}
assert(fb->Attachment[BUFFER_STENCIL].Renderbuffer == NULL);
- rb = _mesa_new_renderbuffer(ctx, 0);
+ rb = _swrast_new_soft_renderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating stencil buffer");
return GL_FALSE;
rb->InternalFormat = GL_STENCIL_INDEX8;
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
+ _mesa_attach_and_own_rb(fb, BUFFER_STENCIL, rb);
return GL_TRUE;
}
assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer == NULL);
assert(fb->Attachment[BUFFER_STENCIL].Renderbuffer == NULL);
- rb = _mesa_new_renderbuffer(ctx, 0);
+ rb = _swrast_new_soft_renderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating depth+stencil buffer");
return GL_FALSE;
rb->InternalFormat = GL_DEPTH_STENCIL;
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
- _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
+ _mesa_attach_and_own_rb(fb, BUFFER_DEPTH, rb);
+ _mesa_attach_and_reference_rb(fb, BUFFER_STENCIL, rb);
return GL_TRUE;
}
assert(fb->Attachment[BUFFER_ACCUM].Renderbuffer == NULL);
- rb = _mesa_new_renderbuffer(ctx, 0);
+ rb = _swrast_new_soft_renderbuffer(ctx, 0);
if (!rb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating accum buffer");
return GL_FALSE;
rb->InternalFormat = GL_RGBA16_SNORM;
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, BUFFER_ACCUM, rb);
+ _mesa_attach_and_own_rb(fb, BUFFER_ACCUM, rb);
return GL_TRUE;
}
assert(numBuffers <= MAX_AUX_BUFFERS);
for (i = 0; i < numBuffers; i++) {
- struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, 0);
+ struct gl_renderbuffer *rb = _swrast_new_soft_renderbuffer(ctx, 0);
assert(fb->Attachment[BUFFER_AUX0 + i].Renderbuffer == NULL);
rb->InternalFormat = GL_RGBA;
rb->AllocStorage = soft_renderbuffer_storage;
- _mesa_add_renderbuffer(fb, BUFFER_AUX0 + i, rb);
+ _mesa_attach_and_own_rb(fb, BUFFER_AUX0 + i, rb);
}
return GL_TRUE;
}
}
#endif
}
+
+
+
+static void
+map_attachment(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ gl_buffer_index buffer)
+{
+ struct gl_texture_object *texObj = fb->Attachment[buffer].Texture;
+ struct gl_renderbuffer *rb = fb->Attachment[buffer].Renderbuffer;
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+
+ if (texObj) {
+ /* map texture image (render to texture) */
+ const GLuint level = fb->Attachment[buffer].TextureLevel;
+ const GLuint face = fb->Attachment[buffer].CubeMapFace;
+ const GLuint slice = fb->Attachment[buffer].Zoffset;
+ struct gl_texture_image *texImage = texObj->Image[face][level];
+ if (texImage) {
+ ctx->Driver.MapTextureImage(ctx, texImage, slice,
+ 0, 0, texImage->Width, texImage->Height,
+ GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
+ &srb->Map, &srb->RowStride);
+ }
+ }
+ else if (rb) {
+ /* Map ordinary renderbuffer */
+ ctx->Driver.MapRenderbuffer(ctx, rb,
+ 0, 0, rb->Width, rb->Height,
+ GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
+ &srb->Map, &srb->RowStride,
+ fb->FlipY);
+ }
+
+ assert(srb->Map);
+}
+
+
+static void
+unmap_attachment(struct gl_context *ctx,
+ struct gl_framebuffer *fb,
+ gl_buffer_index buffer)
+{
+ struct gl_texture_object *texObj = fb->Attachment[buffer].Texture;
+ struct gl_renderbuffer *rb = fb->Attachment[buffer].Renderbuffer;
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+
+ if (texObj) {
+ /* unmap texture image (render to texture) */
+ const GLuint level = fb->Attachment[buffer].TextureLevel;
+ const GLuint face = fb->Attachment[buffer].CubeMapFace;
+ const GLuint slice = fb->Attachment[buffer].Zoffset;
+ struct gl_texture_image *texImage = texObj->Image[face][level];
+ if (texImage) {
+ ctx->Driver.UnmapTextureImage(ctx, texImage, slice);
+ }
+ }
+ else if (rb) {
+ /* unmap ordinary renderbuffer */
+ ctx->Driver.UnmapRenderbuffer(ctx, rb);
+ }
+
+ srb->Map = NULL;
+}
+
+
+/**
+ * Determine what type to use (ubyte vs. float) for span colors for the
+ * given renderbuffer.
+ * See also _swrast_write_rgba_span().
+ */
+static void
+find_renderbuffer_colortype(struct gl_renderbuffer *rb)
+{
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+ GLuint rbMaxBits = _mesa_get_format_max_bits(rb->Format);
+ GLenum rbDatatype = _mesa_get_format_datatype(rb->Format);
+
+ if (rbDatatype == GL_UNSIGNED_NORMALIZED && rbMaxBits <= 8) {
+ /* the buffer's values fit in GLubyte values */
+ srb->ColorType = GL_UNSIGNED_BYTE;
+ }
+ else {
+ /* use floats otherwise */
+ srb->ColorType = GL_FLOAT;
+ }
+}
+
+
+/**
+ * Map the renderbuffers we'll use for tri/line/point rendering.
+ */
+void
+_swrast_map_renderbuffers(struct gl_context *ctx)
+{
+ struct gl_framebuffer *fb = ctx->DrawBuffer;
+ struct gl_renderbuffer *depthRb, *stencilRb;
+ GLuint buf;
+
+ depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ if (depthRb) {
+ /* map depth buffer */
+ map_attachment(ctx, fb, BUFFER_DEPTH);
+ }
+
+ stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ if (stencilRb && stencilRb != depthRb) {
+ /* map stencil buffer */
+ map_attachment(ctx, fb, BUFFER_STENCIL);
+ }
+
+ for (buf = 0; buf < fb->_NumColorDrawBuffers; buf++) {
+ if (fb->_ColorDrawBufferIndexes[buf] != BUFFER_NONE) {
+ map_attachment(ctx, fb, fb->_ColorDrawBufferIndexes[buf]);
+ find_renderbuffer_colortype(fb->_ColorDrawBuffers[buf]);
+ }
+ }
+}
+
+
+/**
+ * Unmap renderbuffers after rendering.
+ */
+void
+_swrast_unmap_renderbuffers(struct gl_context *ctx)
+{
+ struct gl_framebuffer *fb = ctx->DrawBuffer;
+ struct gl_renderbuffer *depthRb, *stencilRb;
+ GLuint buf;
+
+ depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ if (depthRb) {
+ /* map depth buffer */
+ unmap_attachment(ctx, fb, BUFFER_DEPTH);
+ }
+
+ stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ if (stencilRb && stencilRb != depthRb) {
+ /* map stencil buffer */
+ unmap_attachment(ctx, fb, BUFFER_STENCIL);
+ }
+
+ for (buf = 0; buf < fb->_NumColorDrawBuffers; buf++) {
+ if (fb->_ColorDrawBufferIndexes[buf] != BUFFER_NONE) {
+ unmap_attachment(ctx, fb, fb->_ColorDrawBufferIndexes[buf]);
+ }
+ }
+}
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