diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_pixel_draw.c')
-rw-r--r-- | src/mesa/drivers/dri/intel/intel_pixel_draw.c | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_draw.c b/src/mesa/drivers/dri/intel/intel_pixel_draw.c new file mode 100644 index 0000000000..8ebbc95a1d --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_pixel_draw.c @@ -0,0 +1,430 @@ +/************************************************************************** + * + * Copyright 2006 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 portionsalloc + * 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/enums.h" +#include "main/image.h" +#include "main/mtypes.h" +#include "main/macros.h" +#include "main/bufferobj.h" +#include "main/teximage.h" +#include "main/texenv.h" +#include "main/texobj.h" +#include "main/texstate.h" +#include "main/texparam.h" +#include "main/matrix.h" +#include "main/varray.h" +#include "main/attrib.h" +#include "main/enable.h" +#include "main/buffers.h" +#include "main/fbobject.h" +#include "main/renderbuffer.h" +#include "main/depth.h" +#include "main/hash.h" +#include "main/blend.h" +#include "glapi/dispatch.h" +#include "swrast/swrast.h" + +#include "intel_screen.h" +#include "intel_context.h" +#include "intel_batchbuffer.h" +#include "intel_blit.h" +#include "intel_buffers.h" +#include "intel_regions.h" +#include "intel_pixel.h" +#include "intel_buffer_objects.h" +#include "intel_fbo.h" + +static GLboolean +intel_texture_drawpixels(GLcontext * ctx, + GLint x, GLint y, + GLsizei width, GLsizei height, + GLenum format, + GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels) +{ + GLuint texname; + GLfloat vertices[4][4]; + GLfloat texcoords[4][2]; + + /* We're going to mess with texturing with no regard to existing texture + * state, so if there is some set up we have to bail. + */ + if (ctx->Texture._EnabledUnits != 0) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels() fallback: texturing enabled\n"); + return GL_FALSE; + } + + /* Can't do textured DrawPixels with a fragment program, unless we were + * to generate a new program that sampled our texture and put the results + * in the fragment color before the user's program started. + */ + if (ctx->FragmentProgram.Enabled) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels() fallback: fragment program enabled\n"); + return GL_FALSE; + } + + /* We don't have a way to generate fragments with stencil values which * + * will set the resulting stencil value. + */ + if (format == GL_STENCIL_INDEX) + return GL_FALSE; + + /* Check that we can load in a texture this big. */ + if (width > (1 << (ctx->Const.MaxTextureLevels - 1)) || + height > (1 << (ctx->Const.MaxTextureLevels - 1))) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels() fallback: bitmap too large (%dx%d)\n", + width, height); + return GL_FALSE; + } + + /* To do DEPTH_COMPONENT, we would need to change our setup to not draw to + * the color buffer, and sample the texture values into the fragment depth + * in a program. + */ + if (format == GL_DEPTH_COMPONENT) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, + "glDrawPixels() fallback: format == GL_DEPTH_COMPONENT\n"); + return GL_FALSE; + } + + _mesa_PushAttrib(GL_ENABLE_BIT | GL_TRANSFORM_BIT | GL_TEXTURE_BIT | + GL_CURRENT_BIT); + _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); + + /* XXX: pixel store stuff */ + _mesa_Disable(GL_POLYGON_STIPPLE); + + _mesa_ActiveTextureARB(GL_TEXTURE0_ARB); + _mesa_Enable(GL_TEXTURE_2D); + _mesa_GenTextures(1, &texname); + _mesa_BindTexture(GL_TEXTURE_2D, texname); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + _mesa_TexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); + /* + _mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE); + _mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE); + */ + _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, format, + type, pixels); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + _mesa_Ortho(0, ctx->DrawBuffer->Width, 0, ctx->DrawBuffer->Height, 1, -1); + + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + + /* Create the vertex buffer based on the current raster pos. The x and y + * we're handed are ctx->Current.RasterPos[0,1] rounded to integers. + * We also apply the depth. However, the W component is already multiplied + * into ctx->Current.RasterPos[0,1,2] and we can ignore it at this point. + */ + vertices[0][0] = x; + vertices[0][1] = y; + vertices[0][2] = ctx->Current.RasterPos[2]; + vertices[0][3] = 1.0; + vertices[1][0] = x + width * ctx->Pixel.ZoomX; + vertices[1][1] = y; + vertices[1][2] = ctx->Current.RasterPos[2]; + vertices[1][3] = 1.0; + vertices[2][0] = x + width * ctx->Pixel.ZoomX; + vertices[2][1] = y + height * ctx->Pixel.ZoomY; + vertices[2][2] = ctx->Current.RasterPos[2]; + vertices[2][3] = 1.0; + vertices[3][0] = x; + vertices[3][1] = y + height * ctx->Pixel.ZoomY; + vertices[3][2] = ctx->Current.RasterPos[2]; + vertices[3][3] = 1.0; + + texcoords[0][0] = 0.0; + texcoords[0][1] = 0.0; + texcoords[1][0] = 1.0; + texcoords[1][1] = 0.0; + texcoords[2][0] = 1.0; + texcoords[2][1] = 1.0; + texcoords[3][0] = 0.0; + texcoords[3][1] = 1.0; + + _mesa_VertexPointer(4, GL_FLOAT, 4 * sizeof(GLfloat), &vertices); + _mesa_TexCoordPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &texcoords); + _mesa_Enable(GL_VERTEX_ARRAY); + _mesa_Enable(GL_TEXTURE_COORD_ARRAY); + CALL_DrawArrays(ctx->Exec, (GL_TRIANGLE_FAN, 0, 4)); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PopMatrix(); + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PopMatrix(); + _mesa_PopClientAttrib(); + _mesa_PopAttrib(); + + _mesa_DeleteTextures(1, &texname); + + return GL_TRUE; +} + +static GLboolean +intel_stencil_drawpixels(GLcontext * ctx, + GLint x, GLint y, + GLsizei width, GLsizei height, + GLenum format, + GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels) +{ + GLuint texname, rb_name, fb_name, old_fb_name; + GLfloat vertices[4][2]; + GLfloat texcoords[4][2]; + struct intel_renderbuffer *irb; + struct intel_renderbuffer *depth_irb; + struct gl_renderbuffer *rb; + struct gl_pixelstore_attrib old_unpack; + GLstencil *stencil_pixels; + int row; + + if (format != GL_STENCIL_INDEX) + return GL_FALSE; + + /* If there's nothing to write, we're done. */ + if (ctx->Stencil.WriteMask[0] == 0) + return GL_TRUE; + + /* Can't do a per-bit writemask while treating stencil as rgba data. */ + if ((ctx->Stencil.WriteMask[0] & 0xff) != 0xff) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels(STENCIL_INDEX) fallback: " + "stencil mask enabled\n"); + return GL_FALSE; + } + + /* We use FBOs for our wrapping of the depthbuffer into a color + * destination. + */ + if (!ctx->Extensions.EXT_framebuffer_object) + return GL_FALSE; + + /* We're going to mess with texturing with no regard to existing texture + * state, so if there is some set up we have to bail. + */ + if (ctx->Texture._EnabledUnits != 0) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels(STENCIL_INDEX) fallback: " + "texturing enabled\n"); + return GL_FALSE; + } + + /* Can't do textured DrawPixels with a fragment program, unless we were + * to generate a new program that sampled our texture and put the results + * in the fragment color before the user's program started. + */ + if (ctx->FragmentProgram.Enabled) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels(STENCIL_INDEX) fallback: " + "fragment program enabled\n"); + return GL_FALSE; + } + + /* Check that we can load in a texture this big. */ + if (width > (1 << (ctx->Const.MaxTextureLevels - 1)) || + height > (1 << (ctx->Const.MaxTextureLevels - 1))) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glDrawPixels(STENCIL_INDEX) fallback: " + "bitmap too large (%dx%d)\n", + width, height); + return GL_FALSE; + } + + _mesa_PushAttrib(GL_ENABLE_BIT | GL_TRANSFORM_BIT | GL_TEXTURE_BIT | + GL_CURRENT_BIT | GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT); + old_fb_name = ctx->DrawBuffer->Name; + + _mesa_Disable(GL_POLYGON_STIPPLE); + _mesa_Disable(GL_DEPTH_TEST); + _mesa_Disable(GL_STENCIL_TEST); + + /* Unpack the supplied stencil values into a ubyte buffer. */ + assert(sizeof(GLstencil) == sizeof(GLubyte)); + stencil_pixels = _mesa_malloc(width * height * sizeof(GLstencil)); + for (row = 0; row < height; row++) { + GLvoid *source = _mesa_image_address2d(unpack, pixels, + width, height, + GL_COLOR_INDEX, type, + row, 0); + _mesa_unpack_stencil_span(ctx, width, GL_UNSIGNED_BYTE, + stencil_pixels + + row * width * sizeof(GLstencil), + type, source, unpack, ctx->_ImageTransferState); + } + + /* Take the current depth/stencil renderbuffer, and make a new one wrapping + * it which will be treated as GL_RGBA8 so we can render to it as a color + * buffer. + */ + depth_irb = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH); + irb = intel_create_renderbuffer(GL_RGBA8); + rb = &irb->Base; + irb->Base.Width = depth_irb->Base.Width; + irb->Base.Height = depth_irb->Base.Height; + intel_renderbuffer_set_region(irb, depth_irb->region); + + /* Create a name for our renderbuffer, which lets us use other mesa + * rb functions for convenience. + */ + _mesa_GenRenderbuffersEXT(1, &rb_name); + irb->Base.RefCount++; + _mesa_HashInsert(ctx->Shared->RenderBuffers, rb_name, &irb->Base); + + /* Bind the new renderbuffer to the color attachment point. */ + _mesa_GenFramebuffersEXT(1, &fb_name); + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb_name); + _mesa_FramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + GL_RENDERBUFFER_EXT, + rb_name); + /* Choose to render to the color attachment. */ + _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT); + + _mesa_DepthMask(GL_FALSE); + _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE); + + _mesa_ActiveTextureARB(GL_TEXTURE0_ARB); + _mesa_Enable(GL_TEXTURE_2D); + _mesa_GenTextures(1, &texname); + _mesa_BindTexture(GL_TEXTURE_2D, texname); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + _mesa_TexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); + old_unpack = ctx->Unpack; + ctx->Unpack = ctx->DefaultPacking; + _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_INTENSITY, width, height, 0, + GL_RED, GL_UNSIGNED_BYTE, stencil_pixels); + ctx->Unpack = old_unpack; + _mesa_free(stencil_pixels); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + _mesa_Ortho(0, ctx->DrawBuffer->Width, 0, ctx->DrawBuffer->Height, 1, -1); + + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + + vertices[0][0] = x; + vertices[0][1] = y; + vertices[1][0] = x + width * ctx->Pixel.ZoomX; + vertices[1][1] = y; + vertices[2][0] = x + width * ctx->Pixel.ZoomX; + vertices[2][1] = y + height * ctx->Pixel.ZoomY; + vertices[3][0] = x; + vertices[3][1] = y + height * ctx->Pixel.ZoomY; + + texcoords[0][0] = 0.0; + texcoords[0][1] = 0.0; + texcoords[1][0] = 1.0; + texcoords[1][1] = 0.0; + texcoords[2][0] = 1.0; + texcoords[2][1] = 1.0; + texcoords[3][0] = 0.0; + texcoords[3][1] = 1.0; + + _mesa_VertexPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &vertices); + _mesa_TexCoordPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &texcoords); + _mesa_Enable(GL_VERTEX_ARRAY); + _mesa_Enable(GL_TEXTURE_COORD_ARRAY); + CALL_DrawArrays(ctx->Exec, (GL_TRIANGLE_FAN, 0, 4)); + + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, old_fb_name); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PopMatrix(); + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PopMatrix(); + _mesa_PopClientAttrib(); + _mesa_PopAttrib(); + + _mesa_DeleteTextures(1, &texname); + _mesa_DeleteFramebuffersEXT(1, &fb_name); + _mesa_DeleteRenderbuffersEXT(1, &rb_name); + + return GL_TRUE; +} + +void +intelDrawPixels(GLcontext * ctx, + GLint x, GLint y, + GLsizei width, GLsizei height, + GLenum format, + GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid * pixels) +{ + if (intel_texture_drawpixels(ctx, x, y, width, height, format, type, + unpack, pixels)) + return; + + if (intel_stencil_drawpixels(ctx, x, y, width, height, format, type, + unpack, pixels)) + return; + + if (INTEL_DEBUG & DEBUG_PIXEL) + _mesa_printf("%s: fallback to swrast\n", __FUNCTION__); + + if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) { + /* + * We don't want the i915 texenv program to be applied to DrawPixels. + * This is really just a performance optimization (mesa will other- + * wise happily run the fragment program on each pixel in the image). + */ + struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current; + /* can't just set current frag prog to 0 here as on buffer resize + we'll get new state checks which will segfault. Remains a hack. */ + ctx->FragmentProgram._Current = NULL; + ctx->FragmentProgram._UseTexEnvProgram = GL_FALSE; + ctx->FragmentProgram._Active = GL_FALSE; + _swrast_DrawPixels( ctx, x, y, width, height, format, type, + unpack, pixels ); + ctx->FragmentProgram._Current = fpSave; + ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE; + ctx->FragmentProgram._Active = GL_TRUE; + _swrast_InvalidateState(ctx, _NEW_PROGRAM); + } + else { + _swrast_DrawPixels( ctx, x, y, width, height, format, type, + unpack, pixels ); + } +} |