/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * Copyright 2011 Intel Corporation * 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. * * Authors: * Chad Versace * **************************************************************************/ #include #include #include "main/glheader.h" #include "main/macros.h" #include "main/mtypes.h" #include "main/colormac.h" #include "main/renderbuffer.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() /* 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" /* a8 color span and pixel functions */ #define SPANTMP_PIXEL_FMT GL_ALPHA #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_BYTE #define TAG(x) intel_##x##_A8 #define TAG2(x,y) intel_##x##y##_A8 #include "spantmp2.h" /* ------------------------------------------------------------------------- */ /* s8 stencil span and pixel functions */ /* ------------------------------------------------------------------------- */ /* * HAVE_HW_STENCIL_SPANS determines if stencil buffer read/writes are done with * memcpy or for loops. Since the stencil buffer is interleaved, memcpy won't * work. */ #define HAVE_HW_STENCIL_SPANS 0 #define LOCAL_STENCIL_VARS \ (void) ctx; \ int minx = 0; \ int miny = 0; \ int maxx = rb->Width; \ int maxy = rb->Height; \ int stride = rb->RowStride; \ uint8_t *buf = rb->Data; \ /* Don't flip y. */ #undef Y_FLIP #define Y_FLIP(y) y /** * \brief Get pointer offset into stencil buffer. * * The stencil buffer interleaves two rows into one. Yay for crazy hardware. * The table below demonstrates how the pointer arithmetic behaves for a buffer * with positive stride (s=stride). * * x | y | byte offset * -------------------------- * 0 | 0 | 0 * 0 | 0 | 1 * 1 | 0 | 2 * 1 | 1 | 3 * ... | ... | ... * 0 | 2 | s * 0 | 3 | s + 1 * 1 | 2 | s + 2 * 1 | 3 | s + 3 * * */ static inline intptr_t intel_offset_S8(int stride, GLint x, GLint y) { return 2 * ((y / 2) * stride + x) + y % 2; } #define WRITE_STENCIL(x, y, src) buf[intel_offset_S8(stride, x, y)] = src; #define READ_STENCIL(dest, x, y) dest = buf[intel_offset_S8(stride, x, y)] #define TAG(x) intel_##x##_S8 #include "stenciltmp.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); 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); } 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; rb->Data = NULL; rb->RowStride = 0; } /** * 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(struct gl_context * 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_finalize_mipmap_tree(intel, i); 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(struct gl_context * 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(struct gl_context * ctx) { struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); swdd->SpanRenderStart = intelSpanRenderStart; swdd->SpanRenderFinish = intelSpanRenderFinish; } void intel_map_vertex_shader_textures(struct gl_context *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(struct gl_context *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)); } } } typedef void (*span_init_func)(struct gl_renderbuffer *rb); static span_init_func intel_span_init_funcs[MESA_FORMAT_COUNT] = { [MESA_FORMAT_A8] = intel_InitPointers_A8, [MESA_FORMAT_RGB565] = intel_InitPointers_RGB565, [MESA_FORMAT_ARGB4444] = intel_InitPointers_ARGB4444, [MESA_FORMAT_ARGB1555] = intel_InitPointers_ARGB1555, [MESA_FORMAT_XRGB8888] = intel_InitPointers_xRGB8888, [MESA_FORMAT_ARGB8888] = intel_InitPointers_ARGB8888, [MESA_FORMAT_SARGB8] = intel_InitPointers_ARGB8888, [MESA_FORMAT_Z16] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_X8_Z24] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_S8_Z24] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_S8] = intel_InitStencilPointers_S8, [MESA_FORMAT_R8] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_RG88] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_R16] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_RG1616] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_RGBA_FLOAT32] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_RG_FLOAT32] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_R_FLOAT32] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_INTENSITY_FLOAT32] = _mesa_set_renderbuffer_accessors, [MESA_FORMAT_LUMINANCE_FLOAT32] = _mesa_set_renderbuffer_accessors, }; bool intel_span_supports_format(gl_format format) { return intel_span_init_funcs[format] != NULL; } /** * 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; assert(intel_span_init_funcs[irb->Base.Format]); intel_span_init_funcs[irb->Base.Format](rb); }