#include "pipe/p_inlines.h"
#include "pipe/p_winsys.h"
#include "util/p_tile.h"
+#include "util/u_draw_quad.h"
#include "shader/prog_instruction.h"
#include "cso_cache/cso_context.h"
}
-/**
- * Make fragment program for glBitmap:
- * Sample the texture and kill the fragment if the bit is 0.
- * This program will be combined with the user's fragment program.
- */
-static struct st_fragment_program *
-make_bitmap_fragment_program(GLcontext *ctx)
-{
- struct st_fragment_program *stfp;
- struct gl_program *p;
- GLuint ic = 0;
-
- p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
- if (!p)
- return NULL;
-
- p->NumInstructions = 5;
-
- p->Instructions = _mesa_alloc_instructions(p->NumInstructions);
- if (!p->Instructions) {
- ctx->Driver.DeleteProgram(ctx, p);
- return NULL;
- }
- _mesa_init_instructions(p->Instructions, p->NumInstructions);
-
- /* TEX tmp0, fragment.texcoord[0], texture[0], 2D; */
- p->Instructions[ic].Opcode = OPCODE_TEX;
- p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY;
- p->Instructions[ic].DstReg.Index = 0;
- p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT;
- p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
- p->Instructions[ic].TexSrcUnit = 0;
- p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX;
- ic++;
-
- /* SWZ tmp0.x, tmp0.x, 1111; # tmp0.x = 1.0 */
- p->Instructions[ic].Opcode = OPCODE_SWZ;
- p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY;
- p->Instructions[ic].DstReg.Index = 0;
- p->Instructions[ic].DstReg.WriteMask = WRITEMASK_X;
- p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
- p->Instructions[ic].SrcReg[0].Index = 0;
- p->Instructions[ic].SrcReg[0].Swizzle
- = MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE );
- ic++;
-
- /* SUB tmp0, tmp0.wwww, tmp0.xxxx; # tmp0.w -= 1 */
- p->Instructions[ic].Opcode = OPCODE_SUB;
- p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY;
- p->Instructions[ic].DstReg.Index = 0;
- p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
- p->Instructions[ic].SrcReg[0].Index = 0;
- p->Instructions[ic].SrcReg[0].Swizzle = SWIZZLE_WWWW;
- p->Instructions[ic].SrcReg[1].File = PROGRAM_TEMPORARY;
- p->Instructions[ic].SrcReg[1].Index = 0;
- p->Instructions[ic].SrcReg[1].Swizzle = SWIZZLE_XXXX; /* 1.0 */
- ic++;
-
- /* KIL if tmp0 < 0 */
- p->Instructions[ic].Opcode = OPCODE_KIL;
- p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
- p->Instructions[ic].SrcReg[0].Index = 0;
- ic++;
-
- /* END; */
- p->Instructions[ic++].Opcode = OPCODE_END;
-
- assert(ic == p->NumInstructions);
-
- p->InputsRead = FRAG_BIT_TEX0;
- p->OutputsWritten = 0x0;
-
- stfp = (struct st_fragment_program *) p;
- stfp->Base.UsesKill = GL_TRUE;
- st_translate_fragment_program(ctx->st, stfp, NULL);
-
- return stfp;
-}
-
-
-/**
- * Combine basic bitmap fragment program with the user-defined program.
- */
-static struct st_fragment_program *
-combined_bitmap_fragment_program(GLcontext *ctx)
-{
- struct st_context *st = ctx->st;
- struct st_fragment_program *stfp;
-
- if (!st->bitmap.program) {
- /* create the basic bitmap fragment program */
- st->bitmap.program = make_bitmap_fragment_program(ctx);
- }
-
- if (st->bitmap.user_prog_sn == st->fp->serialNo) {
- /* re-use */
- stfp = st->bitmap.combined_prog;
- }
- else {
- /* Concatenate the bitmap program with the current user-defined program.
- */
- stfp = (struct st_fragment_program *)
- _mesa_combine_programs(ctx,
- &st->bitmap.program->Base.Base,
- &st->fp->Base.Base);
-
-#if 0
- {
- struct gl_program *p = &stfp->Base.Base;
- printf("Combined bitmap program:\n");
- _mesa_print_program(p);
- printf("InputsRead: 0x%x\n", p->InputsRead);
- printf("OutputsWritten: 0x%x\n", p->OutputsWritten);
- _mesa_print_parameter_list(p->Parameters);
- }
-#endif
-
- /* translate to TGSI tokens */
- st_translate_fragment_program(st, stfp, NULL);
-
- /* save new program, update serial numbers */
- st->bitmap.user_prog_sn = st->fp->serialNo;
- st->bitmap.combined_prog = stfp;
- }
-
- /* Ideally we'd have updated the pipe constants during the normal
- * st/atom mechanism. But we can't since this is specific to glBitmap.
- */
- st_upload_constants(st, stfp->Base.Base.Parameters, PIPE_SHADER_FRAGMENT);
-
- return stfp;
-}
-
-
/**
* Make fragment shader for glDraw/CopyPixels. This shader is made
* Create a simple vertex shader that just passes through the
* vertex position and texcoord (and optionally, color).
*/
-struct st_vertex_program *
+static struct st_vertex_program *
st_make_passthrough_vertex_shader(struct st_context *st, GLboolean passColor)
{
/* only make programs once and re-use */
cso_save_rasterizer(cso);
cso_save_viewport(cso);
- /* setup state: just scissor */
+ /* rasterizer state: just scissor */
{
- struct pipe_rasterizer_state setup;
- memset(&setup, 0, sizeof(setup));
+ struct pipe_rasterizer_state rasterizer;
+ memset(&rasterizer, 0, sizeof(rasterizer));
if (ctx->Scissor.Enabled)
- setup.scissor = 1;
+ rasterizer.scissor = 1;
- cso_set_rasterizer(cso, &setup);
+ cso_set_rasterizer(cso, &rasterizer);
}
/* fragment shader state: TEX lookup program */
-/**
- * Create a texture which represents a bitmap image.
- */
-static struct pipe_texture *
-make_bitmap_texture(GLcontext *ctx, GLsizei width, GLsizei height,
- const struct gl_pixelstore_attrib *unpack,
- const GLubyte *bitmap)
-{
- struct pipe_context *pipe = ctx->st->pipe;
- struct pipe_screen *screen = pipe->screen;
- struct pipe_surface *surface;
- uint format = 0, cpp, comp;
- ubyte *dest;
- struct pipe_texture *pt;
- int row, col;
-
- /* find a texture format we know */
- if (screen->is_format_supported( screen, PIPE_FORMAT_U_I8, PIPE_TEXTURE )) {
- format = PIPE_FORMAT_U_I8;
- cpp = 1;
- comp = 0;
- }
- else if (screen->is_format_supported( screen, PIPE_FORMAT_A8R8G8B8_UNORM, PIPE_TEXTURE )) {
- format = PIPE_FORMAT_A8R8G8B8_UNORM;
- cpp = 4;
- comp = 3; /* alpha channel */ /*XXX little-endian dependency */
- }
- else {
- /* XXX support more formats */
- assert( 0 );
- }
-
- /**
- * Create a texture.
- */
- pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, format, 0, width, height,
- 1, 0);
- if (!pt)
- return NULL;
-
- if (unpack->BufferObj && unpack->BufferObj->Name) {
- /*
- pt->region = buffer_object_region(unpack->BufferObj);
- */
- printf("st_Bitmap (sourcing from PBO not implemented yet)\n");
- }
-
- surface = screen->get_tex_surface(screen, pt, 0, 0, 0);
-
- /* map texture surface */
- dest = pipe_surface_map(surface);
-
- /* Put image into texture surface.
- * Note that the image is actually going to be upside down in
- * the texture. We deal with that with texcoords.
- */
-
- for (row = 0; row < height; row++) {
- const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,
- bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
- ubyte *destRow = dest + row * surface->pitch * cpp;
-
- if (unpack->LsbFirst) {
- /* Lsb first */
- GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
- for (col = 0; col < width; col++) {
-
- /* set texel to 255 if bit is set */
- destRow[comp] = (*src & mask) ? 255 : 0;
- destRow += cpp;
-
- if (mask == 128U) {
- src++;
- mask = 1U;
- }
- else {
- mask = mask << 1;
- }
- }
-
- /* get ready for next row */
- if (mask != 1)
- src++;
- }
- else {
- /* Msb first */
- GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
- for (col = 0; col < width; col++) {
-
- /* set texel to 255 if bit is set */
- destRow[comp] =(*src & mask) ? 255 : 0;
- destRow += cpp;
-
- if (mask == 1U) {
- src++;
- mask = 128U;
- }
- else {
- mask = mask >> 1;
- }
- }
-
- /* get ready for next row */
- if (mask != 128)
- src++;
- }
-
- } /* row */
-
- /* Release surface */
- pipe_surface_unmap(surface);
- pipe_surface_reference(&surface, NULL);
- pipe->texture_update(pipe, pt, 0, 0x1);
-
- pt->format = format;
-
- return pt;
-}
-
-
-
-static void
-st_Bitmap(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height,
- const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap )
-{
- struct st_fragment_program *stfp;
- struct st_vertex_program *stvp;
- struct st_context *st = ctx->st;
- struct pipe_texture *pt;
-
- stvp = st_make_passthrough_vertex_shader(ctx->st, GL_TRUE);
- stfp = combined_bitmap_fragment_program(ctx);
-
- st_validate_state(st);
-
- pt = make_bitmap_texture(ctx, width, height, unpack, bitmap);
- if (pt) {
- draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
- width, height, 1.0, 1.0,
- pt, stvp, stfp,
- ctx->Current.RasterColor, GL_FALSE);
-
- pipe_texture_reference(&pt, NULL);
- }
-}
-
-
static void
copy_stencil_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
{
functions->DrawPixels = st_DrawPixels;
functions->CopyPixels = st_CopyPixels;
- functions->Bitmap = st_Bitmap;
}
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