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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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/glheader.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/colormac.h"
#include "intel_buffers.h"
#include "intel_fbo.h"
#include "intel_screen.h"
#include "intel_span.h"
#include "intel_regions.h"
#include "intel_tex.h"
#include "swrast/swrast.h"
static void
intel_set_span_functions(struct intel_context *intel,
struct gl_renderbuffer *rb);
#undef DBG
#define DBG 0
#define LOCAL_VARS \
struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
const GLint yScale = rb->Name ? 1 : -1; \
const GLint yBias = rb->Name ? 0 : rb->Height - 1; \
int minx = 0, miny = 0; \
int maxx = rb->Width; \
int maxy = rb->Height; \
int pitch = irb->region->pitch * irb->region->cpp; \
void *buf = irb->region->buffer->virtual; \
GLuint p; \
(void) p; \
(void)buf; (void)pitch; /* unused for non-gttmap. */ \
#define HW_CLIPLOOP()
#define HW_ENDCLIPLOOP()
#define Y_FLIP(_y) ((_y) * yScale + yBias)
#define HW_LOCK()
#define HW_UNLOCK()
/* Convenience macros to avoid typing the address argument over and over */
#define NO_TILE(_X, _Y) (((_Y) * irb->region->pitch + (_X)) * irb->region->cpp)
/* r5g6b5 color span and pixel functions */
#define SPANTMP_PIXEL_FMT GL_RGB
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
#define TAG(x) intel_##x##_RGB565
#define TAG2(x,y) intel_##x##y_RGB565
#include "spantmp2.h"
/* a4r4g4b4 color span and pixel functions */
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_4_4_4_4_REV
#define TAG(x) intel_##x##_ARGB4444
#define TAG2(x,y) intel_##x##y_ARGB4444
#include "spantmp2.h"
/* a1r5g5b5 color span and pixel functions */
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_1_5_5_5_REV
#define TAG(x) intel_##x##_ARGB1555
#define TAG2(x,y) intel_##x##y##_ARGB1555
#include "spantmp2.h"
/* a8r8g8b8 color span and pixel functions */
#define SPANTMP_PIXEL_FMT GL_BGRA
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) intel_##x##_ARGB8888
#define TAG2(x,y) intel_##x##y##_ARGB8888
#include "spantmp2.h"
/* x8r8g8b8 color span and pixel functions */
#define SPANTMP_PIXEL_FMT GL_BGR
#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
#define TAG(x) intel_##x##_xRGB8888
#define TAG2(x,y) intel_##x##y##_xRGB8888
#include "spantmp2.h"
#define LOCAL_DEPTH_VARS \
struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
const GLint yScale = rb->Name ? 1 : -1; \
const GLint yBias = rb->Name ? 0 : rb->Height - 1; \
int minx = 0, miny = 0; \
int maxx = rb->Width; \
int maxy = rb->Height; \
int pitch = irb->region->pitch * irb->region->cpp; \
void *buf = irb->region->buffer->virtual; \
(void)buf; (void)pitch; /* unused for non-gttmap. */ \
#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
/* z16 depthbuffer functions. */
#define VALUE_TYPE GLushort
#define WRITE_DEPTH(_x, _y, d) \
(*(uint16_t *)(irb->region->buffer->virtual + NO_TILE(_x, _y)) = d)
#define READ_DEPTH(d, _x, _y) \
d = *(uint16_t *)(irb->region->buffer->virtual + NO_TILE(_x, _y))
#define TAG(x) intel_##x##_z16
#include "depthtmp.h"
/* z24_s8 and z24_x8 depthbuffer functions. */
#define VALUE_TYPE GLuint
#define WRITE_DEPTH(_x, _y, d) \
(*(uint32_t *)(irb->region->buffer->virtual + NO_TILE(_x, _y)) = d)
#define READ_DEPTH(d, _x, _y) \
d = *(uint32_t *)(irb->region->buffer->virtual + NO_TILE(_x, _y))
#define TAG(x) intel_##x##_z24_s8
#include "depthtmp.h"
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);
intel_set_span_functions(intel, rb);
}
void
intel_renderbuffer_unmap(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_unmap_gtt(irb->region->buffer);
rb->GetRow = NULL;
rb->PutRow = NULL;
}
/**
* Map or unmap all the renderbuffers which we may need during
* software rendering.
* XXX in the future, we could probably convey extra information to
* reduce the number of mappings needed. I.e. if doing a glReadPixels
* from the depth buffer, we really only need one mapping.
*
* XXX Rewrite this function someday.
* We can probably just loop over all the renderbuffer attachments,
* map/unmap all of them, and not worry about the _ColorDrawBuffers
* _ColorReadBuffer, _DepthBuffer or _StencilBuffer fields.
*/
static void
intel_map_unmap_framebuffer(struct intel_context *intel,
struct gl_framebuffer *fb,
GLboolean map)
{
GLuint i;
/* color draw buffers */
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
if (map)
intel_renderbuffer_map(intel, fb->_ColorDrawBuffers[i]);
else
intel_renderbuffer_unmap(intel, fb->_ColorDrawBuffers[i]);
}
/* color read buffer */
if (map)
intel_renderbuffer_map(intel, fb->_ColorReadBuffer);
else
intel_renderbuffer_unmap(intel, fb->_ColorReadBuffer);
/* check for render to textures */
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att =
fb->Attachment + i;
struct gl_texture_object *tex = att->Texture;
if (tex) {
/* render to texture */
ASSERT(att->Renderbuffer);
if (map)
intel_tex_map_images(intel, intel_texture_object(tex));
else
intel_tex_unmap_images(intel, intel_texture_object(tex));
}
}
/* depth buffer (Note wrapper!) */
if (fb->_DepthBuffer) {
if (map)
intel_renderbuffer_map(intel, fb->_DepthBuffer->Wrapped);
else
intel_renderbuffer_unmap(intel, fb->_DepthBuffer->Wrapped);
}
/* stencil buffer (Note wrapper!) */
if (fb->_StencilBuffer) {
if (map)
intel_renderbuffer_map(intel, fb->_StencilBuffer->Wrapped);
else
intel_renderbuffer_unmap(intel, fb->_StencilBuffer->Wrapped);
}
intel_check_front_buffer_rendering(intel);
}
/**
* Prepare for software rendering. Map current read/draw framebuffers'
* renderbuffes and all currently bound texture objects.
*
* Old note: Moved locking out to get reasonable span performance.
*/
void
intelSpanRenderStart(GLcontext * ctx)
{
struct intel_context *intel = intel_context(ctx);
GLuint i;
intel_flush(&intel->ctx);
intel_prepare_render(intel);
for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled) {
struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
intel_tex_map_images(intel, intel_texture_object(texObj));
}
}
intel_map_unmap_framebuffer(intel, ctx->DrawBuffer, GL_TRUE);
if (ctx->ReadBuffer != ctx->DrawBuffer)
intel_map_unmap_framebuffer(intel, ctx->ReadBuffer, GL_TRUE);
}
/**
* Called when done software rendering. Unmap the buffers we mapped in
* the above function.
*/
void
intelSpanRenderFinish(GLcontext * ctx)
{
struct intel_context *intel = intel_context(ctx);
GLuint i;
_swrast_flush(ctx);
for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled) {
struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
intel_tex_unmap_images(intel, intel_texture_object(texObj));
}
}
intel_map_unmap_framebuffer(intel, ctx->DrawBuffer, GL_FALSE);
if (ctx->ReadBuffer != ctx->DrawBuffer)
intel_map_unmap_framebuffer(intel, ctx->ReadBuffer, GL_FALSE);
}
void
intelInitSpanFuncs(GLcontext * ctx)
{
struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
swdd->SpanRenderStart = intelSpanRenderStart;
swdd->SpanRenderFinish = intelSpanRenderFinish;
}
void
intel_map_vertex_shader_textures(GLcontext *ctx)
{
struct intel_context *intel = intel_context(ctx);
int i;
if (ctx->VertexProgram._Current == NULL)
return;
for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled &&
ctx->VertexProgram._Current->Base.TexturesUsed[i] != 0) {
struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
intel_tex_map_images(intel, intel_texture_object(texObj));
}
}
}
void
intel_unmap_vertex_shader_textures(GLcontext *ctx)
{
struct intel_context *intel = intel_context(ctx);
int i;
if (ctx->VertexProgram._Current == NULL)
return;
for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled &&
ctx->VertexProgram._Current->Base.TexturesUsed[i] != 0) {
struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
intel_tex_unmap_images(intel, intel_texture_object(texObj));
}
}
}
/**
* Plug in appropriate span read/write functions for the given renderbuffer.
* These are used for the software fallbacks.
*/
static void
intel_set_span_functions(struct intel_context *intel,
struct gl_renderbuffer *rb)
{
struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
switch (irb->Base.Format) {
case MESA_FORMAT_RGB565:
intel_InitPointers_RGB565(rb);
break;
case MESA_FORMAT_ARGB4444:
intel_InitPointers_ARGB4444(rb);
break;
case MESA_FORMAT_ARGB1555:
intel_InitPointers_ARGB1555(rb);
break;
case MESA_FORMAT_XRGB8888:
intel_InitPointers_xRGB8888(rb);
break;
case MESA_FORMAT_ARGB8888:
intel_InitPointers_ARGB8888(rb);
break;
case MESA_FORMAT_Z16:
intel_InitDepthPointers_z16(rb);
break;
case MESA_FORMAT_X8_Z24:
case MESA_FORMAT_S8_Z24:
intel_InitDepthPointers_z24_s8(rb);
break;
default:
_mesa_problem(NULL,
"Unexpected MesaFormat %d in intelSetSpanFunctions",
irb->Base.Format);
break;
}
}
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