diff options
Diffstat (limited to 'src/cairo-gl-shaders.c')
-rw-r--r-- | src/cairo-gl-shaders.c | 352 |
1 files changed, 351 insertions, 1 deletions
diff --git a/src/cairo-gl-shaders.c b/src/cairo-gl-shaders.c index 7d7b669a8..623f8d604 100644 --- a/src/cairo-gl-shaders.c +++ b/src/cairo-gl-shaders.c @@ -551,7 +551,6 @@ cairo_gl_shader_get_vertex_source (cairo_gl_var_type_t src, status = _cairo_memory_stream_destroy (stream, &source, &length); if (unlikely (status)) return status; - *out = (char *) source; return CAIRO_STATUS_SUCCESS; } @@ -791,6 +790,7 @@ cairo_gl_shader_emit_color (cairo_output_stream_t *stream, } break; case CAIRO_GL_OPERAND_RADIAL_GRADIENT_A0: + if (op->gradient.gradient->n_stops != 2) { if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { _cairo_output_stream_printf (stream, "in vec2 %s_texcoords;\n" @@ -850,8 +850,116 @@ cairo_gl_shader_emit_color (cairo_output_stream_t *stream, "}\n", textstr, rectstr, namestr, namestr); } + } else { // else of if (op->gradient.gradient->n_stops != 2) + if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { + _cairo_output_stream_printf (stream, + "in vec2 %s_texcoords;\n" + "uniform vec2 %s_texdims;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float t = 0.5 * C / B;\n" + " float is_valid = step (-%s_radius_0, t * %s_circle_d.z);\n", + namestr, namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } else { + _cairo_output_stream_printf (stream, + "varying vec2 %s_texcoords;\n" + "uniform vec2 %s_texdims;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float t = 0.5 * C / B;\n" + " float is_valid = step (-%s_radius_0, t * %s_circle_d.z);\n", + namestr, namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } + + if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2 || + ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3) && + _cairo_gl_shader_needs_border_fade (op)) + { + _cairo_output_stream_printf (stream, + " float border_fade = %s_border_fade (t, %s_texdims.x);\n" + //" vec4 texel = texture%s%s (%s_sampler, vec2 (t, 0.5));\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " if (t <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (t >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (t - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel * border_fade, is_valid);\n" + "}\n", + namestr, namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } + else + { + _cairo_output_stream_printf (stream, + //" vec4 texel = texture%s%s (%s_sampler, %s_wrap (vec2 (t, 0.5)));\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " float upper_t = (vec2(%s_wrap (vec2 (t, 0.5)))).x;\n" + " if (upper_t <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (upper_t >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (upper_t - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel, is_valid);\n" + "}\n", + namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } + + } //end of if (op->gradient.gradient->n_stops != 2) break; case CAIRO_GL_OPERAND_RADIAL_GRADIENT_NONE: + if (op->gradient.gradient->n_stops != 2) { if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { _cairo_output_stream_printf (stream, "in vec2 %s_texcoords;\n" @@ -925,8 +1033,130 @@ cairo_gl_shader_emit_color (cairo_output_stream_t *stream, "}\n", textstr, rectstr, namestr, namestr); } + } else { //else of if (op->gradient.gradient->n_stops != 2) + if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { + _cairo_output_stream_printf (stream, + "in vec2 %s_texcoords;\n" + "uniform vec2 %s_texdims;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_a;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n" + " float sqrtdet = sqrt (abs (det));\n" + " vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n" + " \n" + " vec2 is_valid = step (vec2 (0.0), t) * step (t, vec2(1.0));\n" + " float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n" + " \n" + " float upper_t = mix (t.y, t.x, is_valid.x);\n", + namestr, namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, namestr); + } else { + _cairo_output_stream_printf (stream, + "varying vec2 %s_texcoords;\n" + "uniform vec2 %s_texdims;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_a;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n" + " float sqrtdet = sqrt (abs (det));\n" + " vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n" + " \n" + " vec2 is_valid = step (vec2 (0.0), t) * step (t, vec2(1.0));\n" + " float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n" + " \n" + " float upper_t = mix (t.y, t.x, is_valid.x);\n", + namestr, namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, namestr); + } + + if ((ctx->gl_flavor == CAIRO_GL_FLAVOR_ES2 || + ctx->gl_flavor == CAIRO_GL_FLAVOR_ES3) && + _cairo_gl_shader_needs_border_fade (op)) + { + _cairo_output_stream_printf (stream, + " float border_fade = %s_border_fade (upper_t, %s_texdims.x);\n" + //" vec4 texel = texture%s%s (%s_sampler, vec2 (upper_t, 0.5));\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " if (upper_t <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (upper_t >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (upper_t - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel * border_fade, has_color);\n" + "}\n", + namestr, namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } + else + { + _cairo_output_stream_printf (stream, + //" vec4 texel = texture%s%s (%s_sampler, %s_wrap (vec2(upper_t, 0.5)));\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " float upper_tw = (vec2(%s_wrap (vec2(upper_t, 0.5)))).x;\n" + " if (upper_tw <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (upper_tw >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (upper_tw - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel, has_color);\n" + "}\n", + namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr); + } + + } //end of if (op->gradient.gradient->n_stops != 2) break; case CAIRO_GL_OPERAND_RADIAL_GRADIENT_EXT: + if (op->gradient.gradient->n_stops != 2) { if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { _cairo_output_stream_printf (stream, "in vec2 %s_texcoords;\n" @@ -982,10 +1212,119 @@ cairo_gl_shader_emit_color (cairo_output_stream_t *stream, " vec4 texel = texture%s%s (%s_sampler, %s_wrap (vec2(upper_t, 0.5)));\n" " return mix (vec4 (0.0), texel, has_color);\n" "}\n", + namestr, rectstr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, namestr, textstr, rectstr, namestr, namestr); } + } else { //else of if (op->gradient.gradient->n_stops != 2) + if (needs_glsl330 == CAIRO_GLSL_VERSION_330) { + _cairo_output_stream_printf (stream, + "in vec2 %s_texcoords;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_a;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n" + " float sqrtdet = sqrt (abs (det));\n" + " vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n" + " \n" + " vec2 is_valid = step (vec2 (-%s_radius_0), t * %s_circle_d.z);\n" + " float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n" + " \n" + " float upper_t = mix (t.y, t.x, is_valid.x);\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " float upper_tw = (vec2(%s_wrap (vec2(upper_t, 0.5)))).x;\n" + " if (upper_tw <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (upper_tw >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (upper_tw - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel, has_color);\n" + "}\n", + namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr); + } else { + _cairo_output_stream_printf (stream, + "varying vec2 %s_texcoords;\n" + "uniform sampler2D%s %s_sampler;\n" + "uniform vec3 %s_circle_d;\n" + "uniform float %s_a;\n" + "uniform float %s_radius_0;\n" +//two_color_mod +#if 1 + "uniform vec4 %s_color_1;\n" + "uniform vec4 %s_color_2;\n" + "uniform float %s_offset_1;\n" + "uniform float %s_offset_2;\n" +#endif + "\n" + "vec4 get_%s()\n" + "{\n" + " vec3 pos = vec3 (%s_texcoords, %s_radius_0);\n" + " \n" + " float B = dot (pos, %s_circle_d);\n" + " float C = dot (pos, vec3 (pos.xy, -pos.z));\n" + " \n" + " float det = dot (vec2 (B, %s_a), vec2 (B, -C));\n" + " float sqrtdet = sqrt (abs (det));\n" + " vec2 t = (B + vec2 (sqrtdet, -sqrtdet)) / %s_a;\n" + " \n" + " vec2 is_valid = step (vec2 (-%s_radius_0), t * %s_circle_d.z);\n" + " float has_color = step (0., det) * max (is_valid.x, is_valid.y);\n" + " \n" + " float upper_t = mix (t.y, t.x, is_valid.x);\n" +//two_color_mod + " vec4 texel;\n" + " float scale;\n" + " float factor;\n" + " float upper_tw = (vec2(%s_wrap (vec2(upper_t, 0.5)))).x;\n" + " if (upper_tw <= %s_offset_1) {\n" + " texel = %s_color_1;\n" + " } else if (upper_tw >= %s_offset_2) {\n" + " texel = %s_color_2;\n" + " } else {\n" + " scale = %s_offset_2 - %s_offset_1;\n" + " factor = (upper_tw - %s_offset_1)/scale;\n" + " texel = mix (%s_color_1, %s_color_2, factor);\n" + " }\n" + " return mix (vec4 (0.0), texel, has_color);\n" + "}\n", + namestr, rectstr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr, + namestr, namestr, namestr, namestr, namestr, namestr, namestr, + namestr, namestr, namestr); + } + + } // end of if (op->gradient.gradient->n_stops != 2) break; } } @@ -1435,6 +1774,16 @@ _cairo_gl_shader_compile_and_link (cairo_gl_context_t *ctx, _cairo_gl_get_op_uniform_location (ctx, shader, i, "blur_y_axis"); shader->alpha_location[i] = _cairo_gl_get_op_uniform_location (ctx, shader, i, "alpha"); + +//two_color_mod + shader->color_1_location[i] = + _cairo_gl_get_op_uniform_location (ctx, shader, i, "color_1"); + shader->color_2_location[i] = + _cairo_gl_get_op_uniform_location (ctx, shader, i, "color_2"); + shader->offset_1_location[i] = + _cairo_gl_get_op_uniform_location (ctx, shader, i, "offset_1"); + shader->offset_2_location[i] = + _cairo_gl_get_op_uniform_location (ctx, shader, i, "offset_2"); } return CAIRO_STATUS_SUCCESS; @@ -1539,6 +1888,7 @@ _cairo_gl_shader_bind_vec4 (cairo_gl_context_t *ctx, float value2, float value3) { cairo_gl_dispatch_t *dispatch = &ctx->dispatch; + assert (location != -1); dispatch->Uniform4f (location, value0, value1, value2, value3); } |