diff options
author | Brian <[email protected]> | 2007-08-02 14:20:40 -0600 |
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committer | Brian <[email protected]> | 2007-08-02 14:20:40 -0600 |
commit | d09f4e2007b3043ceb9dd3cb9cfab0dcd0226ba6 (patch) | |
tree | a08b71b51d143c1ac3b90f4cbb7307b54282044b | |
parent | 566ae9196b267492d9fcfb2be9065fb8017702f9 (diff) |
initial work for textured-quad glDrawPixels
-rw-r--r-- | src/mesa/state_tracker/st_cb_drawpixels.c | 278 | ||||
-rw-r--r-- | src/mesa/state_tracker/st_cb_drawpixels.h | 38 |
2 files changed, 316 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c new file mode 100644 index 00000000000..7209db00a33 --- /dev/null +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -0,0 +1,278 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + /* + * Authors: + * Brian Paul + */ + +#include "imports.h" + +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" + +#include "st_context.h" +#include "st_atom.h" +#include "st_draw.h" +#include "st_cb_drawpixels.h" +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "vf/vf.h" + + +static void +draw_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z, + GLsizei width, GLsizei height) +{ + static const GLuint attribs[2] = { + VF_ATTRIB_POS, + VF_ATTRIB_TEX0 + }; + GLfloat verts[4][2][4]; /* four verts, two attribs, XYZW */ + GLuint i; + + /* lower-left */ + verts[0][0][0] = x; + verts[0][0][1] = y; + verts[0][1][0] = 0.0; + verts[0][1][1] = 0.0; + + /* lower-right */ + verts[1][0][0] = x + width; + verts[1][0][1] = y; + verts[1][1][0] = 1.0; + verts[1][1][1] = 0.0; + + /* upper-right */ + verts[2][0][0] = x + width; + verts[2][0][1] = y + height; + verts[2][1][0] = 1.0; + verts[2][1][1] = 1.0; + + /* upper-left */ + verts[3][0][0] = x; + verts[3][0][1] = y + height; + verts[3][1][0] = 0.0; + verts[3][1][1] = 11.0; + + /* same for all verts: */ + for (i = 0; i < 4; i++) { + verts[i][0][2] = z; /*Z*/ + verts[i][0][3] = 1.0; /*W*/ + verts[i][1][2] = 0.0; /*R*/ + verts[i][1][3] = 1.0; /*Q*/ + } + + st->pipe->draw_vertices(st->pipe, GL_QUADS, + 4, (GLfloat *) verts, 2, attribs); +} + + +static void +draw_textured_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z, + GLsizei width, GLsizei height, GLenum format, GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels) +{ + struct pipe_setup_state setup; + + /* setup state: just scissor */ + memset(&setup, 0, sizeof(setup)); + if (st->ctx->Scissor.Enabled) + setup.scissor = 1; + st->pipe->set_setup_state(st->pipe, &setup); + + + /* XXX upload the texture image */ + + draw_quad(st, x, y, z, width, height); + + /* restore GL state */ + st->pipe->set_setup_state(st->pipe, &st->state.setup); +} + + +/** + * Check if a GL format/type combination is a match to the given pipe format. + * XXX probably move this to a re-usable place. + */ +static GLboolean +compatible_formats(GLenum format, GLenum type, GLuint pipeFormat) +{ + static const GLuint one = 1; + GLubyte littleEndian = *((GLubyte *) one); + + if (pipeFormat == PIPE_FORMAT_U_R8_G8_B8_A8 && + format == GL_RGBA && + type == GL_UNSIGNED_BYTE && + !littleEndian) { + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_R8_G8_B8_A8 && + format == GL_ABGR_EXT && + type == GL_UNSIGNED_BYTE && + littleEndian) { + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_A8_R8_G8_B8 && + format == GL_BGRA && + type == GL_UNSIGNED_BYTE && + littleEndian) { + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_R5_G6_B5 && + format == GL_RGB && + type == GL_UNSIGNED_SHORT_5_6_5) { + /* endian don't care */ + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_R5_G6_B5 && + format == GL_BGR && + type == GL_UNSIGNED_SHORT_5_6_5_REV) { + /* endian don't care */ + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_S8 && + format == GL_STENCIL_INDEX && + type == GL_UNSIGNED_BYTE) { + return GL_TRUE; + } + else if (pipeFormat == PIPE_FORMAT_U_Z32 && + format == GL_DEPTH_COMPONENT && + type == GL_UNSIGNED_INT) { + return GL_TRUE; + } + /* XXX add more cases */ + else { + return GL_FALSE; + } +} + + +/** + * Check if any per-fragment ops are enabled. + * XXX probably move this to a re-usable place. + */ +static GLboolean +any_fragment_ops(const struct st_context *st) +{ + if (st->state.alpha_test.enabled || + st->state.blend.blend_enable || + st->state.blend.logicop_enable || + st->state.depth.enabled) + /* XXX more checks */ + return GL_TRUE; + else + return GL_FALSE; +} + + +/** + * Check if any pixel transfer ops are enabled. + * XXX probably move this to a re-usable place. + */ +static GLboolean +any_pixel_transfer_ops(const struct st_context *st) +{ + if (st->ctx->Pixel.RedScale != 1.0 || + st->ctx->Pixel.RedBias != 0.0 || + st->ctx->Pixel.GreenScale != 1.0 || + st->ctx->Pixel.GreenBias != 0.0 || + st->ctx->Pixel.BlueScale != 1.0 || + st->ctx->Pixel.BlueBias != 0.0 || + st->ctx->Pixel.AlphaScale != 1.0 || + st->ctx->Pixel.AlphaBias != 0.0 || + st->ctx->Pixel.MapColorFlag) + /* XXX more checks */ + return GL_TRUE; + else + return GL_FALSE; +} + + +/** + * Draw image with a blit, or other non-textured quad method. + */ +static void +draw_blit(struct st_context *st, + GLsizei width, GLsizei height, + GLenum format, GLenum type, const GLvoid *pixels) +{ + + +} + + +/** + * Called via ctx->Driver.DrawPixels() + */ +static void +st_drawpixels(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels) +{ + struct st_context *st = ctx->st; + struct pipe_surface *ps; + GLuint bufferFormat; + + if (format == GL_DEPTH_COMPONENT) { + ps = st->state.framebuffer.zbuf; + } + else if (format == GL_STENCIL_INDEX) { + ps = st->state.framebuffer.sbuf; + } + else { + ps = st->state.framebuffer.cbufs[0]; + } + + bufferFormat = ps->format; + + if (any_fragment_ops(st) || + any_pixel_transfer_ops(st) || + !compatible_formats(format, type, ps->format)) { + /* textured quad */ + draw_textured_quad(st, x, y, ctx->Current.RasterPos[2], width, height, + format, type, unpack, pixels); + } + else { + /* blit */ + draw_blit(st, width, height, format, type, pixels); + } +} + + +void st_init_cb_drawpixels( struct st_context *st ) +{ + struct dd_function_table *functions = &st->ctx->Driver; + + functions->DrawPixels = st_drawpixels; +} + + +void st_destroy_cb_drawpixels( struct st_context *st ) +{ +} diff --git a/src/mesa/state_tracker/st_cb_drawpixels.h b/src/mesa/state_tracker/st_cb_drawpixels.h new file mode 100644 index 00000000000..8c36aaa9316 --- /dev/null +++ b/src/mesa/state_tracker/st_cb_drawpixels.h @@ -0,0 +1,38 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + +#ifndef ST_CB_DRAWPIXELS_H +#define ST_CB_DRAWPIXELS_H + + +void st_init_cb_drawpixels( struct st_context *st ); + +void st_destroy_cb_drawpixels( struct st_context *st ); + + +#endif /* ST_CB_DRAWPIXELS_H */ |