static GLboolean
intel_update_wrapper(GLcontext *ctx, struct intel_renderbuffer *irb,
struct gl_texture_image *texImage)
{
if (texImage->TexFormat == &_mesa_texformat_argb8888) {
irb->Base._ActualFormat = GL_RGBA8;
irb->Base._BaseFormat = GL_RGBA;
DBG("Render to RGBA8 texture OK\n");
}
else if (texImage->TexFormat == &_mesa_texformat_rgb565) {
irb->Base._ActualFormat = GL_RGB5;
irb->Base._BaseFormat = GL_RGB;
DBG("Render to RGB5 texture OK\n");
}
else if (texImage->TexFormat == &_mesa_texformat_z16) {
irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
DBG("Render to DEPTH16 texture OK\n");
} else if (texImage->TexFormat == &_mesa_texformat_z24_s8) {
irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
irb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT;
DBG("Render to DEPTH_STENCIL texture OK\n");
}
else {
DBG("Render to texture BAD FORMAT %d\n",
texImage->TexFormat->MesaFormat);
return GL_FALSE;
}
irb->Base.InternalFormat = irb->Base._ActualFormat;
irb->Base.Width = texImage->Width;
irb->Base.Height = texImage->Height;
irb->Base.DataType = GL_UNSIGNED_BYTE; /* FBO XXX fix */
irb->Base.RedBits = texImage->TexFormat->RedBits;
irb->Base.GreenBits = texImage->TexFormat->GreenBits;
irb->Base.BlueBits = texImage->TexFormat->BlueBits;
irb->Base.AlphaBits = texImage->TexFormat->AlphaBits;
irb->Base.DepthBits = texImage->TexFormat->DepthBits;
irb->Base.Delete = intel_delete_renderbuffer;
irb->Base.AllocStorage = intel_nop_alloc_storage;
intel_set_span_functions(&irb->Base);
irb->RenderToTexture = GL_TRUE;
return GL_TRUE;
}
void
intel_renderbuffer_map(struct intel_context *intel, struct gl_renderbuffer *rb)
{
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
if (irb == NULL || irb->region == NULL)
return;
drm_intel_gem_bo_map_gtt(irb->region->buffer);
rb->Data = irb->region->buffer->virtual;
rb->RowStride = irb->region->pitch;
/* Flip orientation if it's the window system buffer */
if (!rb->Name) {
rb->Data += rb->RowStride * (irb->region->height - 1) * irb->region->cpp;
rb->RowStride = -rb->RowStride;
}
intel_set_span_functions(intel, rb);
}
/**
* Create a new intel_renderbuffer which corresponds to an on-screen window,
* not a user-created renderbuffer.
*/
struct intel_renderbuffer *
intel_create_renderbuffer(GLenum intFormat)
{
GET_CURRENT_CONTEXT(ctx);
struct intel_renderbuffer *irb;
const GLuint name = 0;
irb = CALLOC_STRUCT(intel_renderbuffer);
if (!irb) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "creating renderbuffer");
return NULL;
}
_mesa_init_renderbuffer(&irb->Base, name);
irb->Base.ClassID = INTEL_RB_CLASS;
switch (intFormat) {
case GL_RGB5:
irb->Base._ActualFormat = GL_RGB5;
irb->Base._BaseFormat = GL_RGBA;
irb->Base.RedBits = 5;
irb->Base.GreenBits = 6;
irb->Base.BlueBits = 5;
irb->Base.DataType = GL_UNSIGNED_BYTE;
break;
case GL_RGBA8:
irb->Base._ActualFormat = GL_RGBA8;
irb->Base._BaseFormat = GL_RGBA;
irb->Base.RedBits = 8;
irb->Base.GreenBits = 8;
irb->Base.BlueBits = 8;
irb->Base.AlphaBits = 8;
irb->Base.DataType = GL_UNSIGNED_BYTE;
break;
case GL_STENCIL_INDEX8_EXT:
irb->Base._ActualFormat = GL_STENCIL_INDEX8_EXT;
irb->Base._BaseFormat = GL_STENCIL_INDEX;
irb->Base.StencilBits = 8;
irb->Base.DataType = GL_UNSIGNED_BYTE;
break;
case GL_DEPTH_COMPONENT16:
irb->Base._ActualFormat = GL_DEPTH_COMPONENT16;
irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
irb->Base.DepthBits = 16;
irb->Base.DataType = GL_UNSIGNED_SHORT;
break;
case GL_DEPTH_COMPONENT24:
irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
irb->Base._BaseFormat = GL_DEPTH_COMPONENT;
irb->Base.DepthBits = 24;
irb->Base.DataType = GL_UNSIGNED_INT;
break;
case GL_DEPTH24_STENCIL8_EXT:
irb->Base._ActualFormat = GL_DEPTH24_STENCIL8_EXT;
irb->Base._BaseFormat = GL_DEPTH_STENCIL_EXT;
irb->Base.DepthBits = 24;
irb->Base.StencilBits = 8;
irb->Base.DataType = GL_UNSIGNED_INT_24_8_EXT;
break;
default:
_mesa_problem(NULL,
"Unexpected intFormat in intel_create_renderbuffer");
return NULL;
}
irb->Base.InternalFormat = intFormat;
/* intel-specific methods */
irb->Base.Delete = intel_delete_renderbuffer;
irb->Base.AllocStorage = intel_alloc_window_storage;
irb->Base.GetPointer = intel_get_pointer;
/* This sets the Get/PutRow/Value functions */
intel_set_span_functions(&irb->Base);
return irb;
}
/**
* Called via glRenderbufferStorageEXT() to set the format and allocate
* storage for a user-created renderbuffer.
*/
static GLboolean
intel_alloc_renderbuffer_storage(GLcontext * ctx, struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height)
{
struct intel_context *intel = intel_context(ctx);
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
GLboolean softwareBuffer = GL_FALSE;
int cpp;
ASSERT(rb->Name != 0);
switch (internalFormat) {
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
rb->_ActualFormat = GL_RGB5;
rb->DataType = GL_UNSIGNED_BYTE;
rb->RedBits = 5;
rb->GreenBits = 6;
rb->BlueBits = 5;
cpp = 2;
break;
case GL_RGB:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
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:
rb->_ActualFormat = GL_RGBA8;
rb->DataType = GL_UNSIGNED_BYTE;
rb->RedBits = 8;
rb->GreenBits = 8;
rb->BlueBits = 8;
rb->AlphaBits = 8;
cpp = 4;
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:
/* alloc a depth+stencil buffer */
rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
rb->StencilBits = 8;
cpp = 4;
break;
case GL_DEPTH_COMPONENT16:
rb->_ActualFormat = GL_DEPTH_COMPONENT16;
rb->DataType = GL_UNSIGNED_SHORT;
rb->DepthBits = 16;
cpp = 2;
break;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
rb->DepthBits = 24;
cpp = 4;
break;
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
rb->_ActualFormat = GL_DEPTH24_STENCIL8_EXT;
rb->DataType = GL_UNSIGNED_INT_24_8_EXT;
rb->DepthBits = 24;
rb->StencilBits = 8;
cpp = 4;
break;
default:
_mesa_problem(ctx,
"Unexpected format in intel_alloc_renderbuffer_storage");
return GL_FALSE;
}
intelFlush(ctx);
/* free old region */
if (irb->region) {
intel_region_release(&irb->region);
}
/* allocate new memory region/renderbuffer */
if (softwareBuffer) {
return _mesa_soft_renderbuffer_storage(ctx, rb, internalFormat,
width, height);
}
else {
/* Choose a pitch to match hardware requirements:
*/
GLuint pitch = ((cpp * width + 63) & ~63) / cpp;
/* alloc hardware renderbuffer */
DBG("Allocating %d x %d Intel RBO (pitch %d)\n", width,
height, pitch);
irb->region = intel_region_alloc(intel, cpp, pitch, height);
if (!irb->region)
return GL_FALSE; /* out of memory? */
ASSERT(irb->region->buffer);
rb->Width = width;
rb->Height = height;
/* This sets the Get/PutRow/Value functions */
intel_set_span_functions(&irb->Base);
return GL_TRUE;
}
}