int main(int argc, char **argv)
{
struct fd_state *state;
struct fd_surface *surface, *lolstex1, *lolstex2;
struct fd_program *cat_program, *tex_program;
struct fd_bo *position_vbo, *normal_vbo;
const char *cat_vertex_shader_asm =
"@varying(R0) vertex_normal \n"
"@varying(R1) vertex_position \n"
"@attribute(R1) normal \n"
"@attribute(R2) position \n"
"@uniform(C0-C3) ModelViewMatrix \n"
"@uniform(C4-C7) ModelViewProjectionMatrix \n"
"@uniform(C8-C10) NormalMatrix \n"
"@const(C11) 1.000000, 0.000000, 0.000000, 0.000000 \n"
"EXEC \n"
" FETCH: VERTEX R1.xyz_ = R0.x FMT_32_32_32_FLOAT SIGNED STRIDE(12) CONST(20, 0)\n"
" FETCH: VERTEX R2.xyz_ = R0.x FMT_32_32_32_FLOAT SIGNED STRIDE(12) CONST(20, 1)\n"
" (S)ALU: MULADDv R0 = C7, R2.zzzz, C6 \n"
" ALU: MULADDv R0 = R0, R2.yyyy, C5 \n"
"ALLOC POSITION SIZE(0x0) \n"
"EXEC \n"
" ALU: MULADDv export62 = R0, R2.xxxx, C4 ; gl_Position \n"
" ALU: MULv R0.xyz_ = R1.zzzw, C10 \n"
" ALU: MULADDv R0.xyz_ = R0, R1.yyyw, C9 \n"
" ALU: MULADDv R0.xyz_ = R0, R1.xxxw, C8 \n"
" ALU: DOT3v R1.x___ = R0, R0 \n"
" ALU: MULADDv R3 = C3, R2.zzzz, C2 \n"
"EXEC \n"
" ALU: MULADDv R3 = R3, R2.yyyy, C1 \n"
" ALU: MAXv R0.____ = R0, R0 \n"
" RECIPSQ_IEEE R0.___w = R1.xyzx \n"
"ALLOC PARAM/PIXEL SIZE(0x1) \n"
"EXEC_END \n"
" ALU: MULADDv export1 = R3, R2.xxxx, C0 \n"
" ALU: MULv export0.xyz_ = R0, R0.wwww \n";
const char *cat_fragment_shader_asm =
/*
precision mediump float;
const vec4 MaterialDiffuse = vec4(0.000000, 0.000000, 1.000000, 1.000000);
const vec4 LightColor0 = vec4(0.800000, 0.800000, 0.800000, 1.000000);
const vec4 light_position = vec4(0.000000, 1.000000, 0.000000, 1.000000);
varying vec3 vertex_normal;
varying vec4 vertex_position;
void main(void)
{
const vec4 diffuse_light_color = LightColor0;
const vec4 lightAmbient = vec4(0.1, 0.1, 0.1, 1.0);
const vec4 lightSpecular = vec4(0.8, 0.8, 0.8, 1.0);
const vec4 matAmbient = vec4(0.2, 0.2, 0.2, 1.0);
const vec4 matSpecular = vec4(1.0, 1.0, 1.0, 1.0);
const float matShininess = 100.0; // C4.x
vec3 eye_direction = normalize(-vertex_position.xyz);
vec3 light_direction = normalize(light_position.xyz/light_position.w -
vertex_position.xyz/vertex_position.w);
vec3 normalized_normal = normalize(vertex_normal);
// reflect(i,n) -> i - 2 * dot(n,i) * n
vec3 reflection = reflect(-light_direction, normalized_normal);
float specularTerm = pow(max(0.0, dot(reflection, eye_direction)), matShininess);
float diffuseTerm = max(0.0, dot(normalized_normal, light_direction));
vec4 specular = (lightSpecular * matSpecular);
vec4 ambient = (lightAmbient * matAmbient);
vec4 diffuse = (diffuse_light_color * MaterialDiffuse);
vec4 result = (specular * specularTerm) + ambient + (diffuse * diffuseTerm);
gl_FragColor = result;
}
*/
"@varying(R0) vertex_normal \n"
"@varying(R1) vertex_position \n"
"@const(C0) 0.000000, 1.000000, 0.000000, 0.000000 \n"
"@const(C1) 0.800000, 0.800000, 0.800000, 1.000000 \n"
"@const(C2) 0.020000, 0.020000, 0.020000, 1.000000 \n"
"@const(C3) 0.000000, 0.000000, 0.800000, 1.000000 \n"
"@const(C4) 100.000000, 0.000000, 0.000000, 0.000000 \n"
"EXEC \n"
" (S)ALU: DOT3v R2.x___ = R0, R0 ; normalize(vertex_normal) \n"
" RECIP_IEEE R3.x___ = R1 ; 1/vertex_position.x ? R1.wyzw? \n"
" ALU: MULADDv R3.xyz_ = C0.xyxw, -R1, R3.xxxw ; light_position.xyz/1.0 - \n"
" ; vertex_position.xyz/vertex_position.w \n"
" ALU: DOT3v R2.x___ = R3, R3 ; normalize(light_position...) \n"
" RECIPSQ_IEEE R0.___w = R2.xyzx ; normalize(vertex_normal) \n"
"; here the RSQ sees the R2 value written in first instruction, rather than \n"
"; the R2 dst being calculated as part of the same VLIW instruction \n"
" ALU: MULv R0.xyz_ = R0, R0.wwww ; normalized_normal = normalize(vertex_normal) \n"
" RECIPSQ_IEEE R0.___w = R2.xyzx ; normalize(light_position...) \n"
" ALU: MULv R2.xyz_ = R3, R0.wwww ; light_direction = normalize(light_position...) \n"
" ALU: DOT3v R3.x___ = -R1, -R1 ; normalize(-vertex_position.xyz) \n"
"EXEC \n"
"; reflect(i,n) -> i - 2 * dot(n,i) * n \n"
" ALU: DOT3v R3.x___ = -R2, R0 ; reflect(-light_direction, normalized_normal) \n"
" RECIPSQ_IEEE R0.___w = R3.xyzx ; normalize(-vertex_position.xyz); \n"
" ALU: MULv R1.xyz_ = -R1, R0.wwww ; eye_direction = normalize(-vertex_position.xyz) \n"
" ADDs R3.x___ = R3.xyzx ; 2 * dot(n, i) \n"
" ALU: MULADDv R3.xyz_ = -R2, R0, -R3.xxxw ; reflect(..) -> i + (n * (2 * dot(n, i)) \n"
" ALU: DOT3v R1.x___ = R1, R3 ; dot(reflection, eye_direction) \n"
" ALU: MAXv R1.x___ = R1, C0 ; max(0.0, dot(reflection, eye_direction) \n"
" ALU: DOT3v R0.x___ = R2, R0 ; dot(normalized_normal, light_direction) \n"
" LOG_CLAMP R0.___w = R1.xyzx ; pow(max(0.0, dot(...)), matShininess) \n"
"EXEC \n"
" ALU: MAXv R0.x___ = R0, C0 ; diffuseTerm = max(0.0, dot(...)) \n"
" MUL_CONST_0 R0.___w = C4.wyzx ; specularTerm = pow(..., matShininess) \n"
" ALU: MAXv R0.____ = R0, R0 \n"
" EXP_IEEE R1.x___ = R0 ; specularTerm = pow(..) \n"
"; C2 is ambient = (lightAmbient * matAmbient) = vec4(0.1,0.1,0.1,1.0) * vec4(0.2,0.2,0.2,1.0) \n"
"; C1 is specular = (lightSpecular * matSpecular) = vec4(0.8,0.8,0.8,1.0) * vec4(1.0,1.0,1.0,1.0) \n"
" ALU: MULADDv R1.x__w = C2, R1.xyzx, C1 ; ambient + (specularTerm * specular) \n"
"ALLOC PARAM/PIXEL SIZE(0x0) \n"
"EXEC_END ADDR(0x12) CNT(0x1) \n"
" ALU: MULADDv export0 = R1.xxxw, R0.xxxx, C3.xxzw ; gl_FragColor \n"
"NOP \n";
static const GLfloat texcoords[] = {
0.0f, 1.0f,
1.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
};
static const GLfloat tex1_vertices[] = {
-0.95, +0.45, -1.0,
+0.45, +0.45, -1.0,
-0.95, +0.95, -1.0,
+0.45, +0.95, -1.0
};
static const GLfloat tex2_vertices[] = {
-0.45, -0.95, -1.0,
+0.95, -0.95, -1.0,
-0.45, -0.45, -1.0,
+0.95, -0.45, -1.0
};
const char *tex_vertex_shader_asm =
"@attribute(R1) aPosition \n"
"@attribute(R2) aTexCoord \n"
"@varying(R0) vTexCoord \n"
"EXEC \n"
" FETCH: VERTEX R2.xy11 = R0.x FMT_32_32_FLOAT SIGNED \n"
" STRIDE(8) CONST(20, 1) \n"
" (S)FETCH: VERTEX R1.xyz1 = R0.x FMT_32_32_32_FLOAT SIGNED \n"
" STRIDE(12) CONST(20, 0) \n"
"ALLOC POSITION SIZE(0x0) \n"
"EXEC \n"
" ALU: MAXv export62 = R1, R1 ; gl_Position \n"
"ALLOC PARAM/PIXEL SIZE(0x0) \n"
"EXEC_END \n"
" ALU: MAXv export0 = R2, R2 ; vTexCoord \n"
"NOP \n";
const char *tex_fragment_shader_asm =
"@varying(R0) vTexCoord \n"
"@sampler(0) uTexture \n"
"EXEC \n"
" (S)FETCH: SAMPLE R0.xyzw = R0.xyx CONST(0) \n"
"ALLOC PARAM/PIXEL SIZE(0x0) \n"
"EXEC_END \n"
" ALU: MAXv export0 = R0, R0 ; gl_FragColor \n"
"NOP \n";
uint32_t width = 0, height = 0;
int i, n = 1;
if (argc == 2)
n = atoi(argv[1]);
DEBUG_MSG("----------------------------------------------------------------");
RD_START("fd-cat", "");
state = fd_init();
if (!state)
return -1;
surface = fd_surface_screen(state, &width, &height);
if (!surface)
return -1;
/* load textures: */
lolstex1 = fd_surface_new_fmt(state, lolstex1_image.width, lolstex1_image.height,
COLORX_8_8_8_8);
fd_surface_upload(lolstex1, lolstex1_image.pixel_data);
lolstex2 = fd_surface_new_fmt(state, lolstex2_image.width, lolstex2_image.height,
COLORX_8_8_8_8);
fd_surface_upload(lolstex2, lolstex2_image.pixel_data);
fd_enable(state, GL_CULL_FACE);
fd_depth_func(state, GL_LEQUAL);
fd_enable(state, GL_DEPTH_TEST);
fd_tex_param(state, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
fd_tex_param(state, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
fd_blend_func(state, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* this needs to come after enabling depth test as enabling depth test
* effects bin sizes:
*/
fd_make_current(state, surface);
/* construct the two shader programs: */
cat_program = fd_program_new();
fd_program_attach_asm(cat_program, FD_SHADER_VERTEX, cat_vertex_shader_asm);
fd_program_attach_asm(cat_program, FD_SHADER_FRAGMENT, cat_fragment_shader_asm);
tex_program = fd_program_new();
fd_program_attach_asm(tex_program, FD_SHADER_VERTEX, tex_vertex_shader_asm);
fd_program_attach_asm(tex_program, FD_SHADER_FRAGMENT, tex_fragment_shader_asm);
fd_link(state);
position_vbo = fd_attribute_bo_new(state, cat_position_sz, cat_position);
normal_vbo = fd_attribute_bo_new(state, cat_normal_sz, cat_normal);
for (i = 0; i < n; i++) {
GLfloat aspect = (GLfloat)height / (GLfloat)width;
ESMatrix modelview;
ESMatrix projection;
ESMatrix modelviewprojection;
float normal[9];
float scale = 1.8;
esMatrixLoadIdentity(&modelview);
esTranslate(&modelview, 0.0f, 0.0f, -8.0f);
esRotate(&modelview, 45.0f - (0.5f * i), 0.0f, 1.0f, 0.0f);
esMatrixLoadIdentity(&projection);
esFrustum(&projection,
-scale, +scale,
-scale * aspect, +scale * aspect,
5.5f, 10.0f);
esMatrixLoadIdentity(&modelviewprojection);
esMatrixMultiply(&modelviewprojection, &modelview, &projection);
normal[0] = modelview.m[0][0];
normal[1] = modelview.m[0][1];
normal[2] = modelview.m[0][2];
normal[3] = modelview.m[1][0];
normal[4] = modelview.m[1][1];
normal[5] = modelview.m[1][2];
normal[6] = modelview.m[2][0];
normal[7] = modelview.m[2][1];
normal[8] = modelview.m[2][2];
fd_clear_color(state, 0xff000000);
fd_clear(state, GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
fd_attribute_bo(state, "normal", normal_vbo);
fd_attribute_bo(state, "position", position_vbo);
fd_uniform_attach(state, "ModelViewMatrix",
4, 4, &modelview.m[0][0]);
fd_uniform_attach(state, "ModelViewProjectionMatrix",
4, 4, &modelviewprojection.m[0][0]);
fd_uniform_attach(state, "NormalMatrix",
3, 3, normal);
/* draw cat: */
fd_disable(state, GL_BLEND);
fd_set_program(state, cat_program);
fd_draw_arrays(state, GL_TRIANGLES, 0, cat_vertices);
/* setup to draw text (common to tex1 and tex2): */
fd_enable(state, GL_BLEND);
fd_set_program(state, tex_program);
fd_attribute_pointer(state, "aTexCoord", 2, 4, texcoords);
/* draw tex1: */
fd_set_texture(state, "uTexture", lolstex1);
fd_attribute_pointer(state, "aPosition", 3, 4, tex1_vertices);
fd_draw_arrays(state, GL_TRIANGLE_STRIP, 0, 4);
/* draw tex2: */
fd_set_texture(state, "uTexture", lolstex2);
fd_attribute_pointer(state, "aPosition", 3, 4, tex2_vertices);
fd_draw_arrays(state, GL_TRIANGLE_STRIP, 0, 4);
fd_swap_buffers(state);
}
fd_flush(state);
fd_dump_bmp(surface, "lolscat.bmp");
fd_fini(state);
RD_END();
return 0;
}
int main(int argc, char **argv)
{
struct fd_state *state;
struct fd_surface *surface;
int width, height;
static const GLfloat vertices[] = {
-0.75f, +0.25f, +0.50f, // Quad #0
-0.25f, +0.25f, +0.50f,
-0.25f, +0.75f, +0.50f,
-0.75f, +0.75f, +0.50f,
+0.25f, +0.25f, +0.90f, // Quad #1
+0.75f, +0.25f, +0.90f,
+0.75f, +0.75f, +0.90f,
+0.25f, +0.75f, +0.90f,
-0.75f, -0.75f, +0.50f, // Quad #2
-0.25f, -0.75f, +0.50f,
-0.25f, -0.25f, +0.50f,
-0.75f, -0.25f, +0.50f,
+0.25f, -0.75f, +0.50f, // Quad #3
+0.75f, -0.75f, +0.50f,
+0.75f, -0.25f, +0.50f,
+0.25f, -0.25f, +0.50f,
-1.00f, -1.00f, +0.00f, // Big Quad
+1.00f, -1.00f, +0.00f,
+1.00f, +1.00f, +0.00f,
-1.00f, +1.00f, +0.00f,
};
static const GLubyte indices[][6] = {
{ 0, 1, 2, 0, 2, 3 }, // Quad #0
{ 4, 5, 6, 4, 6, 7 }, // Quad #1
{ 8, 9, 10, 8, 10, 11 }, // Quad #2
{ 12, 13, 14, 12, 14, 15 }, // Quad #3
{ 16, 17, 18, 16, 18, 19 }, // Big Quad
};
#define NumTests 4
static const GLfloat colors[NumTests][4] = {
{ 1.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 1.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 1.0f, 1.0f },
{ 1.0f, 1.0f, 0.0f, 0.0f },
};
#if 0
const char *vertex_shader_source =
"attribute vec4 aPosition; \n"
" \n"
"void main() \n"
"{ \n"
" gl_Position = aPosition; \n"
"} \n";
const char *fragment_shader_source =
"precision highp float; \n"
"uniform vec4 uColor; \n"
" \n"
"void main() \n"
"{ \n"
" gl_FragColor = uColor; \n"
"} \n";
#else
const char *vertex_shader_asm =
"@attribute(R1) aPosition \n"
"EXEC \n"
" (S)FETCH: VERTEX R1.xyz1 = R0.x FMT_32_32_32_FLOAT SIGNED \n"
" STRIDE(12) CONST(20, 0) \n"
"ALLOC POSITION SIZE(0x0) \n"
"EXEC \n"
" ALU: MAXv export62 = R1, R1 ; gl_Position \n"
"ALLOC PARAM/PIXEL SIZE(0x0) \n"
"EXEC_END \n"
"NOP \n";
const char *fragment_shader_asm =
"@uniform(C0) uColor \n"
"ALLOC PARAM/PIXEL SIZE(0x0) \n"
"EXEC_END \n"
" ALU: MAXv export0 = C0, C0 ; gl_FragColor \n";
#endif
GLint numStencilBits;
GLuint stencilValues[NumTests] = {
0x7, // Result of test 0
0x0, // Result of test 1
0x2, // Result of test 2
0xff // Result of test 3. We need to fill this value in a run-time
};
int i;
DEBUG_MSG("----------------------------------------------------------------");
RD_START("fd-stencil", "");
state = fd_init();
if (!state)
return -1;
surface = fd_surface_screen(state, &width, &height);
if (!surface)
return -1;
fd_enable(state, GL_DEPTH_TEST);
fd_enable(state, GL_STENCIL_TEST);
/* this needs to come after enabling depth/stencil test as these
* effect bin sizes:
*/
fd_make_current(state, surface);
fd_vertex_shader_attach_asm(state, vertex_shader_asm);
fd_fragment_shader_attach_asm(state, fragment_shader_asm);
fd_link(state);
fd_clear_color(state, 0x00000000);
fd_clear_stencil(state, 0x1);
fd_clear_depth(state, 0.75);
// Clear the color, depth, and stencil buffers. At this
// point, the stencil buffer will be 0x1 for all pixels
fd_clear(state, GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
fd_attribute_pointer(state, "aPosition", 3, 20, vertices);
fd_uniform_attach(state, "uColor", 4, 1, (GLfloat[]){
0.0, 0.0, 0.0, 0.0,
});
// Test 0:
//
// Initialize upper-left region. In this case, the
// stencil-buffer values will be replaced because the
// stencil test for the rendered pixels will fail the
// stencil test, which is
//
// ref mask stencil mask
// ( 0x7 & 0x3 ) < ( 0x1 & 0x7 )
//
// The value in the stencil buffer for these pixels will
// be 0x7.
//
fd_stencil_func(state, GL_LESS, 0x7, 0x3);
fd_stencil_op(state, GL_REPLACE, GL_DECR, GL_DECR);
fd_draw_elements(state, GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices[0]);
// Test 1:
//
// Initialize the upper-right region. Here, we'll decrement
// the stencil-buffer values where the stencil test passes
// but the depth test fails. The stencil test is
//
// ref mask stencil mask
// ( 0x3 & 0x3 ) > ( 0x1 & 0x3 )
//
// but where the geometry fails the depth test. The
// stencil values for these pixels will be 0x0.
//
fd_stencil_func(state, GL_GREATER, 0x3, 0x3);
fd_stencil_op(state, GL_KEEP, GL_DECR, GL_KEEP);
fd_draw_elements(state, GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices[1]);
// Test 2:
//
// Initialize the lower-left region. Here we'll increment
// (with saturation) the stencil value where both the
// stencil and depth tests pass. The stencil test for
// these pixels will be
//
// ref mask stencil mask
// ( 0x1 & 0x3 ) == ( 0x1 & 0x3 )
//
// The stencil values for these pixels will be 0x2.
//
fd_stencil_func(state, GL_EQUAL, 0x1, 0x3);
fd_stencil_op(state, GL_KEEP, GL_INCR, GL_INCR);
fd_draw_elements(state, GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices[2]);
// Test 3:
//
// Finally, initialize the lower-right region. We'll invert
// the stencil value where the stencil tests fails. The
// stencil test for these pixels will be
//
// ref mask stencil mask
// ( 0x2 & 0x1 ) == ( 0x1 & 0x1 )
//
// The stencil value here will be set to ~((2^s-1) & 0x1),
// (with the 0x1 being from the stencil clear value),
// where 's' is the number of bits in the stencil buffer
//
fd_stencil_func(state, GL_EQUAL, 0x2, 0x1);
fd_stencil_op(state, GL_INVERT, GL_KEEP, GL_KEEP);
fd_draw_elements(state, GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices[3]);
// Since we don't know at compile time how many stencil bits are present,
// we'll query, and update the value correct value in the
// stencilValues arrays for the fourth tests. We'll use this value
// later in rendering.
numStencilBits = 8;
stencilValues[3] = ~(((1 << numStencilBits) - 1) & 0x1) & 0xff;
// Use the stencil buffer for controlling where rendering will
// occur. We disable writing to the stencil buffer so we
// can test against them without modifying the values we
// generated.
fd_stencil_mask(state, 0x0);
for (i = 0; i < NumTests; i++) {
fd_stencil_func(state, GL_EQUAL, stencilValues[i], 0xff);
fd_uniform_attach(state, "uColor", 4, 1, colors[i]);
fd_draw_elements(state, GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices[4]);
}
fd_swap_buffers(state);
fd_flush(state);
fd_dump_bmp(surface, "stencil.bmp");
fd_fini(state);
RD_END();
return 0;
}
