diff --git a/glamor/Makefile.am b/glamor/Makefile.am index ffc8c23d8..dec6467fd 100644 --- a/glamor/Makefile.am +++ b/glamor/Makefile.am @@ -22,6 +22,8 @@ libglamor_la_SOURCES = \ glamor_setspans.c \ glamor_render.c \ glamor_gradient.c \ + glamor_program.c \ + glamor_transform.c \ glamor_trapezoid.c \ glamor_tile.c \ glamor_triangles.c\ diff --git a/glamor/glamor_priv.h b/glamor/glamor_priv.h index ed2c767dc..164d5815e 100644 --- a/glamor/glamor_priv.h +++ b/glamor/glamor_priv.h @@ -52,6 +52,7 @@ #include "glamor_debug.h" #include "glamor_context.h" +#include "glamor_program.h" #include diff --git a/glamor/glamor_program.c b/glamor/glamor_program.c new file mode 100644 index 000000000..e2e1434ee --- /dev/null +++ b/glamor/glamor_program.c @@ -0,0 +1,394 @@ +/* + * Copyright © 2014 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include "glamor_priv.h" +#include "glamor_transform.h" +#include "glamor_program.h" + +static Bool +use_solid(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg) +{ + return glamor_set_solid(pixmap, gc, TRUE, prog->fg_uniform); +} + +const glamor_facet glamor_fill_solid = { + .name = "solid", + .fs_exec = " gl_FragColor = fg;\n", + .locations = glamor_program_location_fg, + .use = use_solid, +}; + +static Bool +use_tile(PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg) +{ + return glamor_set_tiled(pixmap, gc, prog->fill_offset_uniform, prog->fill_size_uniform); +} + +static const glamor_facet glamor_fill_tile = { + .name = "tile", + .version = 130, + .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n", + .fs_exec = " gl_FragColor = texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0);\n", + .locations = glamor_program_location_fill, + .use = use_tile, +}; + +#if 0 +static Bool +use_stipple(PixmapPtr pixmap, GCPtr gc, glamor_program *prog) +{ + return glamor_set_stippled(pixmap, gc, prog->fg_uniform, prog->fill_offset_uniform, prog->fill_size_uniform); +} + +static const glamor_facet glamor_fill_stipple = { + .name = "stipple", + .version = 130, + .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n"; + .fs_exec = (" if (texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0).x == 0)\n" + " discard;\n" + " gl_FragColor = fg;\n") + .locations = glamor_program_location_fg | glamor_program_location_fill + .use = use_stipple, +}; + +static const glamor_facet glamor_fill_opaque_stipple = { + .name = "opaque_stipple", + .version = 130, + .vs_exec = " fill_pos = fill_offset + primitive.xy + pos;\n"; + .fs_exec = (" if (texelFetch(sampler, ivec2(mod(fill_pos,fill_size)), 0).x == 0)\n" + " gl_FragColor = bg;\n" + " else\n" + " gl_FragColor = fg;\n"), + .locations = glamor_program_location_fg | glamor_program_location_bg | glamor_program_location_fill + .use = use_opaque_stipple +}; +#endif + +static const glamor_facet *glamor_facet_fill[4] = { + &glamor_fill_solid, + &glamor_fill_tile, + NULL, + NULL, +}; + +typedef struct { + glamor_program_location location; + const char *vs_vars; + const char *fs_vars; +} glamor_location_var; + +static glamor_location_var location_vars[] = { + { + .location = glamor_program_location_fg, + .fs_vars = "uniform vec4 fg;\n" + }, + { + .location = glamor_program_location_bg, + .fs_vars = "uniform vec4 bg;\n" + }, + { + .location = glamor_program_location_fill, + .vs_vars = ("uniform vec2 fill_offset;\n" + "varying vec2 fill_pos;\n"), + .fs_vars = ("uniform sampler2D sampler;\n" + "uniform vec2 fill_size;\n" + "varying vec2 fill_pos;\n") + }, + { + .location = glamor_program_location_font, + .fs_vars = "uniform usampler2D font;\n", + }, +}; + +#define NUM_LOCATION_VARS (sizeof location_vars / sizeof location_vars[0]) + +static char * +add_var(char *cur, const char *add) +{ + char *new; + + if (!add) + return cur; + + new = realloc(cur, strlen(cur) + strlen(add) + 1); + if (!new) { + free(cur); + return NULL; + } + strcat(new, add); + return new; +} + +static char * +vs_location_vars(glamor_program_location locations) +{ + int l; + char *vars = strdup(""); + + for (l = 0; vars && l < NUM_LOCATION_VARS; l++) + if (locations & location_vars[l].location) + vars = add_var(vars, location_vars[l].vs_vars); + return vars; +} + +static char * +fs_location_vars(glamor_program_location locations) +{ + int l; + char *vars = strdup(""); + + for (l = 0; vars && l < NUM_LOCATION_VARS; l++) + if (locations & location_vars[l].location) + vars = add_var(vars, location_vars[l].fs_vars); + return vars; +} + +static const char vs_template[] = + "%s" /* version */ + "%s" /* prim vs_vars */ + "%s" /* fill vs_vars */ + "%s" /* location vs_vars */ + GLAMOR_DECLARE_MATRIX + "void main() {\n" + "%s" /* prim vs_exec, outputs 'pos' and gl_Position */ + "%s" /* fill vs_exec */ + "}\n"; + +static const char fs_template[] = + "%s" /* version */ + GLAMOR_DEFAULT_PRECISION + "%s" /* prim fs_vars */ + "%s" /* fill fs_vars */ + "%s" /* location fs_vars */ + "void main() {\n" + "%s" /* prim fs_exec */ + "%s" /* fill fs_exec */ + "}\n"; + +static const char * +str(const char *s) +{ + if (!s) + return ""; + return s; +} + +static const glamor_facet facet_null_fill = { + .name = "" +}; + +static GLint +glamor_get_uniform(glamor_program *prog, + glamor_program_location location, + const char *name) +{ + GLint uniform; + if (location && (prog->locations & location) == 0) + return -2; + uniform = glGetUniformLocation(prog->prog, name); +#if DBG + ErrorF("%s uniform %d\n", name, uniform); +#endif + return uniform; +} + +Bool +glamor_build_program(ScreenPtr screen, + glamor_program *prog, + const glamor_facet *prim, + const glamor_facet *fill) +{ + glamor_screen_private *glamor_priv = glamor_get_screen_private(screen); + + glamor_program_location locations = prim->locations; + glamor_program_flag flags = prim->flags; + + int version = prim->version; + char *version_string = NULL; + + char *fs_vars = NULL; + char *vs_vars = NULL; + + char *vs_prog_string; + char *fs_prog_string; + + GLint fs_prog, vs_prog; + + if (!fill) + fill = &facet_null_fill; + + locations |= fill->locations; + flags |= fill->flags; + version = MAX(version, fill->version); + + if (version >= 130) { + + /* Would be nice to have a cleaner test for GLSL 1.30 support, + * but for now this should suffice + */ + if (glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP || + epoxy_gl_version() < 30) { + goto fail; + } + } + + vs_vars = vs_location_vars(locations); + fs_vars = fs_location_vars(locations); + + if (!vs_vars) + goto fail; + if (!fs_vars) + goto fail; + + if (version) { + if (asprintf(&version_string, "#version %d\n", version) < 0) + version_string = NULL; + if (!version_string) + goto fail; + } + + if (asprintf(&vs_prog_string, + vs_template, + str(version_string), + str(prim->vs_vars), + str(fill->vs_vars), + vs_vars, + str(prim->vs_exec), + str(fill->vs_exec)) < 0) + vs_prog_string = NULL; + + if (asprintf(&fs_prog_string, + fs_template, + str(version_string), + str(prim->fs_vars), + str(fill->fs_vars), + fs_vars, + str(prim->fs_exec), + str(fill->fs_exec)) < 0) + fs_prog_string = NULL; + + if (!vs_prog_string || !fs_prog_string) + goto fail; + +#define DBG 0 +#if DBG + ErrorF("\nPrograms for %s %s\nVertex shader:\n\n%s\n\nFragment Shader:\n\n%s", + prim->name, fill->name, vs_prog_string, fs_prog_string); +#endif + + prog->prog = glCreateProgram(); + prog->flags = flags; + prog->locations = locations; + prog->prim_use = prim->use; + prog->fill_use = fill->use; + + vs_prog = glamor_compile_glsl_prog(GL_VERTEX_SHADER, vs_prog_string); + fs_prog = glamor_compile_glsl_prog(GL_FRAGMENT_SHADER, fs_prog_string); + free(vs_prog_string); + free(fs_prog_string); + glAttachShader(prog->prog, vs_prog); + glDeleteShader(vs_prog); + glAttachShader(prog->prog, fs_prog); + glDeleteShader(fs_prog); + glBindAttribLocation(prog->prog, GLAMOR_VERTEX_POS, "primitive"); + + if (prim->source_name) { +#if DBG + ErrorF("Bind GLAMOR_VERTEX_SOURCE to %s\n", prim->source_name); +#endif + glBindAttribLocation(prog->prog, GLAMOR_VERTEX_SOURCE, prim->source_name); + } + + glamor_link_glsl_prog(screen, prog->prog, "%s_%s", prim->name, fill->name); + + prog->matrix_uniform = glamor_get_uniform(prog, glamor_program_location_none, "v_matrix"); + prog->fg_uniform = glamor_get_uniform(prog, glamor_program_location_fg, "fg"); + prog->bg_uniform = glamor_get_uniform(prog, glamor_program_location_bg, "bg"); + prog->fill_offset_uniform = glamor_get_uniform(prog, glamor_program_location_fill, "fill_offset"); + prog->fill_size_uniform = glamor_get_uniform(prog, glamor_program_location_fill, "fill_size"); + prog->font_uniform = glamor_get_uniform(prog, glamor_program_location_font, "font"); + + if (glGetError() != GL_NO_ERROR) + goto fail; + + free(version_string); + free(fs_vars); + free(vs_vars); + return TRUE; +fail: + prog->failed = 1; + if (prog->prog) { + glDeleteProgram(prog->prog); + prog->prog = 0; + } + free(version_string); + free(fs_vars); + free(vs_vars); + return FALSE; +} + +Bool +glamor_use_program(PixmapPtr pixmap, + GCPtr gc, + glamor_program *prog, + void *arg) +{ + glUseProgram(prog->prog); + + if (prog->prim_use && !prog->prim_use(pixmap, gc, prog, arg)) + return FALSE; + + if (prog->fill_use && !prog->fill_use(pixmap, gc, prog, arg)) + return FALSE; + + return TRUE; +} + +glamor_program * +glamor_use_program_fill(PixmapPtr pixmap, + GCPtr gc, + glamor_program_fill *program_fill, + const glamor_facet *prim) +{ + ScreenPtr screen = pixmap->drawable.pScreen; + glamor_program *prog = &program_fill->progs[gc->fillStyle]; + + int fill_style = gc->fillStyle; + const glamor_facet *fill; + + if (prog->failed) + return FALSE; + + if (!prog->prog) { + fill = glamor_facet_fill[fill_style]; + if (!fill) + return NULL; + + if (!glamor_build_program(screen, prog, prim, fill)) + return NULL; + } + + if (!glamor_use_program(pixmap, gc, prog, NULL)) + return NULL; + + return prog; +} diff --git a/glamor/glamor_program.h b/glamor/glamor_program.h new file mode 100644 index 000000000..88efc3593 --- /dev/null +++ b/glamor/glamor_program.h @@ -0,0 +1,94 @@ +/* + * Copyright © 2014 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#ifndef _GLAMOR_PROGRAM_H_ +#define _GLAMOR_PROGRAM_H_ + +typedef enum { + glamor_program_location_none = 0, + glamor_program_location_fg = 1, + glamor_program_location_bg = 2, + glamor_program_location_fill = 4, + glamor_program_location_font = 8, +} glamor_program_location; + +typedef enum { + glamor_program_flag_none = 0, +} glamor_program_flag; + +typedef struct _glamor_program glamor_program; + +typedef Bool (*glamor_use) (PixmapPtr pixmap, GCPtr gc, glamor_program *prog, void *arg); + +typedef struct { + const char *name; + const int version; + const char *vs_vars; + const char *vs_exec; + const char *fs_vars; + const char *fs_exec; + const glamor_program_location locations; + const glamor_program_flag flags; + const char *source_name; + glamor_use use; +} glamor_facet; + +struct _glamor_program { + GLint prog; + GLint failed; + GLint matrix_uniform; + GLint fg_uniform; + GLint bg_uniform; + GLint fill_size_uniform; + GLint fill_offset_uniform; + GLint font_uniform; + glamor_program_location locations; + glamor_program_flag flags; + glamor_use prim_use; + glamor_use fill_use; +}; + +typedef struct { + glamor_program progs[4]; +} glamor_program_fill; + +extern const glamor_facet glamor_fill_solid; + +Bool +glamor_build_program(ScreenPtr screen, + glamor_program *prog, + const glamor_facet *prim, + const glamor_facet *fill); + +Bool +glamor_use_program(PixmapPtr pixmap, + GCPtr gc, + glamor_program *prog, + void *arg); + +glamor_program * +glamor_use_program_fill(PixmapPtr pixmap, + GCPtr gc, + glamor_program_fill *program_fill, + const glamor_facet *prim); + +#endif /* _GLAMOR_PROGRAM_H_ */ diff --git a/glamor/glamor_transform.c b/glamor/glamor_transform.c new file mode 100644 index 000000000..d6ba56421 --- /dev/null +++ b/glamor/glamor_transform.c @@ -0,0 +1,215 @@ +/* + * Copyright © 2014 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include "glamor_priv.h" +#include "glamor_transform.h" + + +/* + * Set up rendering to target the specified drawable, computing an + * appropriate transform for the vertex shader to convert + * drawable-relative coordinates into pixmap-relative coordinates. If + * requested, the offset from pixmap origin coordinates back to window + * system coordinates will be returned in *p_off_x, *p_off_y so that + * clipping computations can be adjusted as appropriate + */ + +void +glamor_set_destination_drawable(DrawablePtr drawable, + int box_x, + int box_y, + Bool do_drawable_translate, + Bool center_offset, + GLint matrix_uniform_location, + int *p_off_x, + int *p_off_y) +{ + PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable); + glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap); + int off_x, off_y; + BoxPtr box = glamor_pixmap_box_at(pixmap_priv, box_x, box_y); + int w = box->x2 - box->x1; + int h = box->y2 - box->y1; + float scale_x = 2.0f / (float) w; + float scale_y = 2.0f / (float) h; + float center_adjust = 0.0f; + + glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y); + + off_x -= box->x1; + off_y -= box->y1; + + if (p_off_x) { + *p_off_x = off_x; + *p_off_y = off_y; + } + + /* A tricky computation to find the right value for the two linear functions + * that transform rendering coordinates to pixmap coordinates + * + * pixmap_x = render_x + drawable->x + off_x + * pixmap_y = render_y + drawable->y + off_y + * + * gl_x = pixmap_x * 2 / width - 1 + * gl_y = pixmap_y * 2 / height - 1 + * + * gl_x = (render_x + drawable->x + off_x) * 2 / width - 1 + * + * gl_x = (render_x) * 2 / width + (drawable->x + off_x) * 2 / width - 1 + * + * I'll think about yInverted later, when I have some way to test + */ + + if (do_drawable_translate) { + off_x += drawable->x; + off_y += drawable->y; + } + + /* + * To get GL_POINTS drawn in the right spot, we need to adjust the + * coordinates by 1/2 a pixel. + */ + if (center_offset) + center_adjust = 0.5f; + + glUniform4f(matrix_uniform_location, + scale_x, (off_x + center_adjust) * scale_x - 1.0f, + scale_y, (off_y + center_adjust) * scale_y - 1.0f); + + glamor_set_destination_pixmap_fbo(glamor_pixmap_fbo_at(pixmap_priv, box_x, box_y), + 0, 0, w, h); +} + +/* + * Set up for solid rendering to the specified pixmap using alu, fg and planemask + * from the specified GC. Load the target color into the specified uniform + */ + +void +glamor_set_color(PixmapPtr pixmap, + CARD32 pixel, + GLint uniform) +{ + float color[4]; + + glamor_get_rgba_from_pixel(pixel, + &color[0], &color[1], &color[2], &color[3], + format_for_pixmap(pixmap)); + + glUniform4fv(uniform, 1, color); +} + +Bool +glamor_set_solid(PixmapPtr pixmap, + GCPtr gc, + Bool use_alu, + GLint uniform) +{ + CARD32 pixel; + int alu = use_alu ? gc->alu : GXcopy; + + if (!glamor_set_planemask(pixmap, gc->planemask)) + return FALSE; + + pixel = gc->fgPixel; + + if (!glamor_set_alu(pixmap->drawable.pScreen, alu)) { + switch (gc->alu) { + case GXclear: + pixel = 0; + break; + case GXcopyInverted: + pixel = ~pixel; + break; + case GXset: + pixel = ~0 & gc->planemask; + break; + default: + return FALSE; + } + } + glamor_set_color(pixmap, gc->fgPixel, uniform); + + return TRUE; +} + +Bool +glamor_set_texture(PixmapPtr pixmap, + PixmapPtr texture, + int off_x, + int off_y, + GLint offset_uniform, + GLint size_uniform) +{ + glamor_pixmap_private *texture_priv; + + texture_priv = glamor_get_pixmap_private(texture); + + if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(texture_priv)) + return FALSE; + + if (texture_priv->type == GLAMOR_TEXTURE_LARGE) + return FALSE; + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture_priv->base.fbo->tex); + + glUniform2f(offset_uniform, off_x, off_y); + glUniform2f(size_uniform, texture->drawable.width, texture->drawable.height); + return TRUE; +} + +Bool +glamor_set_tiled(PixmapPtr pixmap, + GCPtr gc, + GLint offset_uniform, + GLint size_uniform) +{ + if (!glamor_set_alu(pixmap->drawable.pScreen, gc->alu)) + return FALSE; + + if (!glamor_set_planemask(pixmap, gc->planemask)) + return FALSE; + + return glamor_set_texture(pixmap, + gc->tile.pixmap, + -gc->patOrg.x, + -gc->patOrg.y, + offset_uniform, + size_uniform); +} + +Bool +glamor_set_stippled(PixmapPtr pixmap, + GCPtr gc, + GLint fg_uniform, + GLint offset_uniform, + GLint size_uniform) +{ + if (!glamor_set_solid(pixmap, gc, TRUE, fg_uniform)) + return FALSE; + + if (!glamor_set_texture(pixmap, gc->stipple, gc->patOrg.x, gc->patOrg.y, offset_uniform, size_uniform)) + return FALSE; + + return TRUE; +} diff --git a/glamor/glamor_transform.h b/glamor/glamor_transform.h new file mode 100644 index 000000000..36b789af8 --- /dev/null +++ b/glamor/glamor_transform.h @@ -0,0 +1,87 @@ +/* + * Copyright © 2014 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#ifndef _GLAMOR_TRANSFORM_H_ +#define _GLAMOR_TRANSFORM_H_ + +void +glamor_set_destination_drawable(DrawablePtr drawable, + int box_x, + int box_y, + Bool do_drawable_translate, + Bool center_offset, + GLint matrix_uniform_location, + int *p_off_x, + int *p_off_y); + +void +glamor_set_color(PixmapPtr pixmap, + CARD32 pixel, + GLint uniform); + +Bool +glamor_set_texture(PixmapPtr pixmap, + PixmapPtr texture, + int off_x, + int off_y, + GLint offset_uniform, + GLint size_uniform); + +Bool +glamor_set_solid(PixmapPtr pixmap, + GCPtr gc, + Bool use_alu, + GLint uniform); + +Bool +glamor_set_tiled(PixmapPtr pixmap, + GCPtr gc, + GLint offset_uniform, + GLint size_uniform); + +Bool +glamor_set_stippled(PixmapPtr pixmap, + GCPtr gc, + GLint fg_uniform, + GLint offset_uniform, + GLint size_uniform); + +/* + * Vertex shader bits that transform X coordinates to pixmap + * coordinates using the matrix computed above + */ + +#define GLAMOR_DECLARE_MATRIX "uniform vec4 v_matrix;\n" +#define GLAMOR_X_POS(x) #x " *v_matrix.x + v_matrix.y" +#define GLAMOR_Y_POS(y) #y " *v_matrix.z + v_matrix.w" +#if 0 +#define GLAMOR_POS(dst,src) \ + " " #dst ".x = " #src ".x * v_matrix.x + v_matrix.y;\n" \ + " " #dst ".y = " #src ".y * v_matrix.z + v_matrix.w;\n" \ + " " #dst ".z = 0.0;\n" \ + " " #dst ".w = 1.0;\n" +#endif +#define GLAMOR_POS(dst,src) \ + " " #dst ".xy = " #src ".xy * v_matrix.xz + v_matrix.yw;\n" \ + " " #dst ".zw = vec2(0.0,1.0);\n" + +#endif /* _GLAMOR_TRANSFORM_H_ */