graw: add quad-tex graw test for basic texturing

2 files changed, 406 insertions, 1 deletions

diff --git a/src/gallium/tests/graw/SConscript b/src/gallium/tests/graw/SConscript
index 1dc8dca381..7eab973db3 100644
--- a/src/gallium/tests/graw/SConscript
+++ b/src/gallium/tests/graw/SConscript
@@ -13,7 +13,8 @@ env.Prepend(LIBS = ['graw'])
 
 progs = [
     'clear',
-    'tri'
+    'tri',
+    'quad-tex',
 ]
 
 for prog in progs:
diff --git a/src/gallium/tests/graw/quad-tex.c b/src/gallium/tests/graw/quad-tex.c
new file mode 100644
index 0000000000..91b1cf49ed
--- /dev/null
+++ b/src/gallium/tests/graw/quad-tex.c
@@ -0,0 +1,404 @@
+/* Display a cleared blue window.  This demo has no dependencies on
+ * any utility code, just the graw interface and gallium.
+ */
+
+#include "state_tracker/graw.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_shader_tokens.h"
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include <unistd.h>             /* for sleep() */
+
+#include "util/u_debug.h"       /* debug_dump_surface_bmp() */
+#include "util/u_inlines.h"
+#include "util/u_memory.h"      /* Offset() */
+#include "util/u_box.h"    
+
+enum pipe_format formats[] = {
+   PIPE_FORMAT_R8G8B8A8_UNORM,
+   PIPE_FORMAT_B8G8R8A8_UNORM,
+   PIPE_FORMAT_NONE
+};
+
+static const int WIDTH = 300;
+static const int HEIGHT = 300;
+
+static struct pipe_screen *screen = NULL;
+static struct pipe_context *ctx = NULL;
+static struct pipe_resource *rttex = NULL;
+static struct pipe_resource *samptex = NULL;
+static struct pipe_surface *surf = NULL;
+static struct pipe_sampler_view *sv = NULL;
+static void *sampler = NULL;
+static void *window = NULL;
+
+struct vertex {
+   float position[4];
+   float color[4];
+};
+
+static struct vertex vertices[] =
+{
+   { { 0.9, -0.9, 0.0, 1.0 },
+     { 1, 0, 0, 1 } },
+
+   { { 0.9,  0.9, 0.0, 1.0 },
+     { 1, 1, 0, 1 } },
+
+   { {-0.9,  0.9, 0.0, 1.0 },
+     { 0, 1, 0, 1 } },
+
+   { {-0.9,  -0.9, 0.0, 1.0 },
+     { 0, 0, 0, 1 } },
+};
+
+
+
+
+static void set_viewport( float x, float y,
+                          float width, float height,
+                          float near, float far)
+{
+   float z = far;
+   float half_width = (float)width / 2.0f;
+   float half_height = (float)height / 2.0f;
+   float half_depth = ((float)far - (float)near) / 2.0f;
+   struct pipe_viewport_state vp;
+
+   vp.scale[0] = half_width;
+   vp.scale[1] = half_height;
+   vp.scale[2] = half_depth;
+   vp.scale[3] = 1.0f;
+
+   vp.translate[0] = half_width + x;
+   vp.translate[1] = half_height + y;
+   vp.translate[2] = half_depth + z;
+   vp.translate[3] = 0.0f;
+
+   ctx->set_viewport_state( ctx, &vp );
+}
+
+static void set_vertices( void )
+{
+   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 = ctx->create_vertex_elements_state(ctx, 2, ve);
+   ctx->bind_vertex_elements_state(ctx, handle);
+
+
+   vbuf.stride = sizeof( struct vertex );
+   vbuf.max_index = sizeof(vertices) / vbuf.stride;
+   vbuf.buffer_offset = 0;
+   vbuf.buffer = screen->user_buffer_create(screen,
+                                            vertices,
+                                            sizeof(vertices),
+                                            PIPE_BIND_VERTEX_BUFFER);
+
+   ctx->set_vertex_buffers(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(ctx, text);
+   ctx->bind_vs_state(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(ctx, text);
+   ctx->bind_fs_state(ctx, handle);
+}
+
+
+static void draw( void )
+{
+   float clear_color[4] = {.5,.5,.5,1};
+
+   ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
+   ctx->draw_arrays(ctx, PIPE_PRIM_QUADS, 0, 4);
+   ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+#if 0
+   /* At the moment, libgraw leaks out/makes available some of the
+    * symbols from gallium/auxiliary, including these debug helpers.
+    * Will eventually want to bless some of these paths, and lock the
+    * others down so they aren't accessible from test programs.
+    *
+    * This currently just happens to work on debug builds - a release
+    * build will probably fail to link here:
+    */
+   debug_dump_surface_bmp(ctx, "result.bmp", surf);
+#endif
+
+   screen->flush_frontbuffer(screen, surf, window);
+}
+
+#define SIZE 16
+
+static void init_tex( void )
+{ 
+   struct pipe_sampler_view sv_template;
+   struct pipe_sampler_state sampler_desc;
+   struct pipe_resource templat;
+   struct pipe_box box;
+   ubyte tex2d[SIZE][SIZE][4];
+   int s, t;
+
+#if (SIZE != 2)
+   for (s = 0; s < SIZE; s++) {
+      for (t = 0; t < SIZE; t++) {
+         if (0) {
+            int x = (s ^ t) & 1;
+	    tex2d[t][s][0] = (x) ? 0 : 63;
+	    tex2d[t][s][1] = (x) ? 0 : 128;
+	    tex2d[t][s][2] = 0;
+	    tex2d[t][s][3] = 0xff;
+         }
+         else {
+            int x = ((s ^ t) >> 2) & 1;
+	    tex2d[t][s][0] = s*255/(SIZE-1);
+	    tex2d[t][s][1] = t*255/(SIZE-1);
+	    tex2d[t][s][2] = (x) ? 0 : 128;
+	    tex2d[t][s][3] = 0xff;
+         }
+      }
+   }
+#else
+   tex2d[0][0][0] = 0;
+   tex2d[0][0][1] = 255;
+   tex2d[0][0][2] = 255;
+   tex2d[0][0][3] = 0;
+
+   tex2d[0][1][0] = 0;
+   tex2d[0][1][1] = 0;
+   tex2d[0][1][2] = 255;
+   tex2d[0][1][3] = 255;
+
+   tex2d[1][0][0] = 255;
+   tex2d[1][0][1] = 255;
+   tex2d[1][0][2] = 0;
+   tex2d[1][0][3] = 255;
+
+   tex2d[1][1][0] = 255;
+   tex2d[1][1][1] = 0;
+   tex2d[1][1][2] = 0;
+   tex2d[1][1][3] = 255;
+#endif
+
+   templat.target = PIPE_TEXTURE_2D;
+   templat.format = PIPE_FORMAT_B8G8R8A8_UNORM;
+   templat.width0 = SIZE;
+   templat.height0 = SIZE;
+   templat.depth0 = 1;
+   templat.last_level = 0;
+   templat.nr_samples = 1;
+   templat.bind = PIPE_BIND_SAMPLER_VIEW;
+
+   
+   samptex = screen->resource_create(screen,
+                                 &templat);
+   if (samptex == NULL)
+      exit(4);
+
+   u_box_2d(0,0,SIZE,SIZE, &box);
+
+   ctx->transfer_inline_write(ctx,
+                              samptex,
+                              u_subresource(0,0),
+                              PIPE_TRANSFER_WRITE,
+                              &box,
+                              tex2d,
+                              sizeof tex2d[0],
+                              sizeof tex2d);
+
+   /* Possibly read back & compare against original data:
+    */
+   if (0)
+   {
+      struct pipe_transfer *t;
+      uint32_t *ptr;
+      t = pipe_get_transfer(ctx, samptex,
+                            0, 0, 0, /* face, level, zslice */
+                            PIPE_TRANSFER_READ,
+                            0, 0, SIZE, SIZE); /* x, y, width, height */
+
+      ptr = ctx->transfer_map(ctx, t);
+
+      if (memcmp(ptr, tex2d, sizeof tex2d) != 0) {
+         assert(0);
+         exit(9);
+      }
+
+      ctx->transfer_unmap(ctx, t);
+
+      ctx->transfer_destroy(ctx, t);
+   }
+
+   memset(&sv_template, 0, sizeof sv_template);
+   sv_template.format = samptex->format;
+   sv_template.texture = samptex;
+   sv_template.first_level = 0;
+   sv_template.last_level = 0;
+   sv_template.swizzle_r = 0;
+   sv_template.swizzle_g = 1;
+   sv_template.swizzle_b = 2;
+   sv_template.swizzle_a = 3;
+   sv = ctx->create_sampler_view(ctx, samptex, &sv_template);
+   if (sv == NULL)
+      exit(5);
+
+   ctx->set_fragment_sampler_views(ctx, 1, &sv);
+   
+
+   memset(&sampler_desc, 0, sizeof sampler_desc);
+   sampler_desc.wrap_s = PIPE_TEX_WRAP_REPEAT;
+   sampler_desc.wrap_t = PIPE_TEX_WRAP_REPEAT;
+   sampler_desc.wrap_r = PIPE_TEX_WRAP_REPEAT;
+   sampler_desc.min_img_filter = PIPE_TEX_FILTER_NEAREST;
+   sampler_desc.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+   sampler_desc.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
+   sampler_desc.compare_mode = PIPE_TEX_COMPARE_NONE;
+   sampler_desc.compare_func = 0;
+   sampler_desc.normalized_coords = 1;
+   sampler_desc.max_anisotropy = 0;
+   
+   sampler = ctx->create_sampler_state(ctx, &sampler_desc);
+   if (sampler == NULL)
+      exit(6);
+
+   ctx->bind_fragment_sampler_states(ctx, 1, &sampler);
+   
+}
+
+static void init( void )
+{
+   struct pipe_framebuffer_state fb;
+   struct pipe_resource templat;
+   int i;
+
+   /* It's hard to say whether window or screen should be created
+    * first.  Different environments would prefer one or the other.
+    *
+    * Also, no easy way of querying supported formats if the screen
+    * cannot be created first.
+    */
+   for (i = 0; 
+        window == NULL && formats[i] != PIPE_FORMAT_NONE;
+        i++) {
+      
+      screen = graw_create_window_and_screen(0,0,300,300,
+                                             formats[i],
+                                             &window);
+   }
+   
+   ctx = screen->context_create(screen, NULL);
+   if (ctx == NULL)
+      exit(3);
+
+   templat.target = PIPE_TEXTURE_2D;
+   templat.format = formats[i];
+   templat.width0 = WIDTH;
+   templat.height0 = HEIGHT;
+   templat.depth0 = 1;
+   templat.last_level = 0;
+   templat.nr_samples = 1;
+   templat.bind = (PIPE_BIND_RENDER_TARGET |
+                   PIPE_BIND_DISPLAY_TARGET);
+   
+   rttex = screen->resource_create(screen,
+                                 &templat);
+   if (rttex == NULL)
+      exit(4);
+
+   surf = screen->get_tex_surface(screen, rttex, 0, 0, 0,
+                                  PIPE_BIND_RENDER_TARGET |
+                                  PIPE_BIND_DISPLAY_TARGET);
+   if (surf == NULL)
+      exit(5);
+
+   memset(&fb, 0, sizeof fb);
+   fb.nr_cbufs = 1;
+   fb.width = WIDTH;
+   fb.height = HEIGHT;
+   fb.cbufs[0] = surf;
+
+   ctx->set_framebuffer_state(ctx, &fb);
+   
+   {
+      struct pipe_blend_state blend;
+      void *handle;
+      memset(&blend, 0, sizeof blend);
+      blend.rt[0].colormask = PIPE_MASK_RGBA;
+      handle = ctx->create_blend_state(ctx, &blend);
+      ctx->bind_blend_state(ctx, handle);
+   }
+
+   {
+      struct pipe_depth_stencil_alpha_state depthstencil;
+      void *handle;
+      memset(&depthstencil, 0, sizeof depthstencil);
+      handle = ctx->create_depth_stencil_alpha_state(ctx, &depthstencil);
+      ctx->bind_depth_stencil_alpha_state(ctx, handle);
+   }
+
+   {
+      struct pipe_rasterizer_state rasterizer;
+      void *handle;
+      memset(&rasterizer, 0, sizeof rasterizer);
+      rasterizer.front_winding = PIPE_WINDING_CW;
+      rasterizer.cull_mode = PIPE_WINDING_NONE;
+      rasterizer.gl_rasterization_rules = 1;
+      handle = ctx->create_rasterizer_state(ctx, &rasterizer);
+      ctx->bind_rasterizer_state(ctx, handle);
+   }
+
+   set_viewport(0, 0, WIDTH, HEIGHT, 30, 1000);
+
+   init_tex();
+
+   set_vertices();
+   set_vertex_shader();
+   set_fragment_shader();
+}
+
+
+int main( int argc, char *argv[] )
+{
+   init();
+
+   graw_set_display_func( draw );
+   graw_main_loop();
+   return 0;
+}