diff options
Diffstat (limited to 'src/gallium/tests/graw/tex-srgb.c')
| -rw-r--r-- | src/gallium/tests/graw/tex-srgb.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/gallium/tests/graw/tex-srgb.c b/src/gallium/tests/graw/tex-srgb.c new file mode 100644 index 00000000000..8eaf0bd1ec7 --- /dev/null +++ b/src/gallium/tests/graw/tex-srgb.c @@ -0,0 +1,224 @@ +/* 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 = info.screen->user_buffer_create(info.screen, + verts, + num_verts *sizeof(struct vertex), + PIPE_BIND_VERTEX_BUFFER); + + 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; +} |