| /* Test sRGB texturing. |
| */ |
| |
| #include "graw_util.h" |
| |
| |
| static const int WIDTH = 600; |
| static const int HEIGHT = 300; |
| |
| static struct graw_info info; |
| |
| static struct pipe_resource *texture; |
| static struct pipe_sampler_view *linear_sv, *srgb_sv; |
| |
| |
| struct vertex { |
| float position[4]; |
| float color[4]; |
| }; |
| |
| static struct vertex vertices1[] = |
| { |
| { { -0.1, -0.9, 0.0, 1.0 }, |
| { 1, 1, 0, 1 } }, |
| |
| { { -0.1, 0.9, 0.0, 1.0 }, |
| { 1, 0, 0, 1 } }, |
| |
| { {-0.9, 0.9, 0.0, 1.0 }, |
| { 0, 0, 0, 1 } }, |
| |
| { {-0.9, -0.9, 0.0, 1.0 }, |
| { 0, 1, 0, 1 } }, |
| }; |
| |
| |
| static struct vertex vertices2[] = |
| { |
| { { 0.9, -0.9, 0.0, 1.0 }, |
| { 1, 1, 0, 1 } }, |
| |
| { { 0.9, 0.9, 0.0, 1.0 }, |
| { 1, 0, 0, 1 } }, |
| |
| { { 0.1, 0.9, 0.0, 1.0 }, |
| { 0, 0, 0, 1 } }, |
| |
| { { 0.1, -0.9, 0.0, 1.0 }, |
| { 0, 1, 0, 1 } }, |
| }; |
| |
| |
| |
| |
| static void |
| set_vertices(struct vertex *verts, unsigned num_verts) |
| { |
| struct pipe_vertex_element ve[2]; |
| struct pipe_vertex_buffer vbuf; |
| void *handle; |
| |
| memset(ve, 0, sizeof ve); |
| |
| ve[0].src_offset = Offset(struct vertex, position); |
| ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
| ve[1].src_offset = Offset(struct vertex, color); |
| ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; |
| |
| handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve); |
| info.ctx->bind_vertex_elements_state(info.ctx, handle); |
| |
| |
| vbuf.stride = sizeof(struct vertex); |
| vbuf.buffer_offset = 0; |
| vbuf.buffer = pipe_buffer_create_with_data(info.ctx, |
| PIPE_BIND_VERTEX_BUFFER, |
| PIPE_USAGE_STATIC, |
| num_verts * sizeof(struct vertex), |
| verts); |
| |
| info.ctx->set_vertex_buffers(info.ctx, 1, &vbuf); |
| } |
| |
| static void set_vertex_shader( void ) |
| { |
| void *handle; |
| const char *text = |
| "VERT\n" |
| "DCL IN[0]\n" |
| "DCL IN[1]\n" |
| "DCL OUT[0], POSITION\n" |
| "DCL OUT[1], GENERIC[0]\n" |
| " 0: MOV OUT[1], IN[1]\n" |
| " 1: MOV OUT[0], IN[0]\n" |
| " 2: END\n"; |
| |
| handle = graw_parse_vertex_shader(info.ctx, text); |
| info.ctx->bind_vs_state(info.ctx, handle); |
| } |
| |
| static void set_fragment_shader( void ) |
| { |
| void *handle; |
| const char *text = |
| "FRAG\n" |
| "DCL IN[0], GENERIC[0], PERSPECTIVE\n" |
| "DCL OUT[0], COLOR\n" |
| "DCL TEMP[0]\n" |
| "DCL SAMP[0]\n" |
| " 0: TXP TEMP[0], IN[0], SAMP[0], 2D\n" |
| " 1: MOV OUT[0], TEMP[0]\n" |
| " 2: END\n"; |
| |
| handle = graw_parse_fragment_shader(info.ctx, text); |
| info.ctx->bind_fs_state(info.ctx, handle); |
| } |
| |
| |
| static void draw( void ) |
| { |
| union pipe_color_union clear_color; |
| |
| clear_color.f[0] = 0.5; |
| clear_color.f[1] = 0.5; |
| clear_color.f[2] = 0.5; |
| clear_color.f[3] = 1.0; |
| |
| info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0); |
| |
| info.ctx->set_fragment_sampler_views(info.ctx, 1, &linear_sv); |
| set_vertices(vertices1, 4); |
| util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); |
| |
| info.ctx->set_fragment_sampler_views(info.ctx, 1, &srgb_sv); |
| set_vertices(vertices2, 4); |
| util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4); |
| |
| info.ctx->flush(info.ctx, NULL); |
| |
| graw_util_flush_front(&info); |
| } |
| |
| |
| static void init_tex( void ) |
| { |
| #define SIZE 64 |
| ubyte tex2d[SIZE][SIZE][4]; |
| int s, t; |
| |
| for (s = 0; s < SIZE; s++) { |
| for (t = 0; t < SIZE; t++) { |
| tex2d[t][s][0] = 0; |
| tex2d[t][s][1] = s * 255 / SIZE; |
| tex2d[t][s][2] = t * 255 / SIZE; |
| tex2d[t][s][3] = 255; |
| } |
| } |
| |
| texture = graw_util_create_tex2d(&info, SIZE, SIZE, |
| PIPE_FORMAT_B8G8R8A8_UNORM, tex2d); |
| |
| { |
| void *sampler; |
| sampler = graw_util_create_simple_sampler(&info, |
| PIPE_TEX_WRAP_REPEAT, |
| PIPE_TEX_FILTER_NEAREST); |
| info.ctx->bind_fragment_sampler_states(info.ctx, 1, &sampler); |
| } |
| |
| /* linear sampler view */ |
| { |
| struct pipe_sampler_view sv_temp; |
| memset(&sv_temp, 0, sizeof sv_temp); |
| sv_temp.format = PIPE_FORMAT_B8G8R8A8_UNORM; |
| sv_temp.texture = texture; |
| sv_temp.swizzle_r = PIPE_SWIZZLE_RED; |
| sv_temp.swizzle_g = PIPE_SWIZZLE_GREEN; |
| sv_temp.swizzle_b = PIPE_SWIZZLE_BLUE; |
| sv_temp.swizzle_a = PIPE_SWIZZLE_ALPHA; |
| linear_sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_temp); |
| if (linear_sv == NULL) |
| exit(0); |
| } |
| |
| /* srgb sampler view */ |
| { |
| struct pipe_sampler_view sv_temp; |
| memset(&sv_temp, 0, sizeof sv_temp); |
| sv_temp.format = PIPE_FORMAT_B8G8R8A8_SRGB; |
| sv_temp.texture = texture; |
| sv_temp.swizzle_r = PIPE_SWIZZLE_RED; |
| sv_temp.swizzle_g = PIPE_SWIZZLE_GREEN; |
| sv_temp.swizzle_b = PIPE_SWIZZLE_BLUE; |
| sv_temp.swizzle_a = PIPE_SWIZZLE_ALPHA; |
| srgb_sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_temp); |
| if (srgb_sv == NULL) |
| exit(0); |
| } |
| #undef SIZE |
| } |
| |
| static void init( void ) |
| { |
| if (!graw_util_create_window(&info, WIDTH, HEIGHT, 1, FALSE)) |
| exit(1); |
| |
| graw_util_default_state(&info, FALSE); |
| |
| graw_util_viewport(&info, 0, 0, WIDTH, HEIGHT, 30, 10000); |
| |
| init_tex(); |
| |
| set_vertex_shader(); |
| set_fragment_shader(); |
| } |
| |
| |
| int main( int argc, char *argv[] ) |
| { |
| init(); |
| |
| graw_set_display_func( draw ); |
| graw_main_loop(); |
| return 0; |
| } |