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test-gles3: added alpha and color modulation

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This commit is contained in:
pelya
2016-09-17 15:25:50 +03:00
parent fca818e838
commit 9a36bff8a5
2 changed files with 35 additions and 16 deletions
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49
project/jni/application/test-gles3/main.cpp
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@@ -158,7 +158,9 @@ static void initShaders()
"const highp float screenHeightDiv = 2.0 / %d.0; \n"
"layout(location = 0) in highp vec2 a_position; \n"
"layout(location = 1) in highp vec2 a_texCoord; \n"
"layout(location = 2) in lowp vec4 a_color; \n"
"out highp vec2 v_texCoord; \n"
"out lowp vec4 v_color; \n"
"void main() \n"
"{ \n"
" gl_Position = vec4( \n"
@@ -166,18 +168,20 @@ static void initShaders()
" 1.0f - a_position.y * screenHeightDiv, \n"
" 0, 1); \n"
" v_texCoord = a_texCoord; \n"
" v_color = a_color; \n"
"} \n"
, screenWidth, screenHeight );
const char *fragmentShaderStr =
"#version 300 es \n"
"in highp vec2 v_texCoord; \n"
"layout(location = 0) out lowp vec4 outColor; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" outColor = texture( s_texture, v_texCoord ); \n"
"} \n";
"#version 300 es \n"
"in highp vec2 v_texCoord; \n"
"in lowp vec4 v_color; \n"
"layout(location = 0) out lowp vec4 outColor; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" outColor = texture( s_texture, v_texCoord ) * v_color; \n"
"} \n";
printf("initShaders(): vertex shader:\n%s\n", vertexShaderStr);
printf("initShaders(): fragment shader:\n%s\n", fragmentShaderStr);
@@ -263,7 +267,9 @@ struct Sprite {
return true;
}
void draw(GLfloat x, GLfloat y, GLfloat width, GLfloat height, GLfloat tex_x1 = 0.0f, GLfloat tex_y1 = 0.0f, GLfloat tex_x2 = 1.0f, GLfloat tex_y2 = 1.0f)
void draw(GLfloat x, GLfloat y, GLfloat width, GLfloat height,
GLfloat tex_x1 = 0.0f, GLfloat tex_y1 = 0.0f, GLfloat tex_x2 = 1.0f, GLfloat tex_y2 = 1.0f,
GLfloat r = 1.0f, GLfloat g = 1.0f, GLfloat b = 1.0f, GLfloat a = 1.0f)
{
if (texture == 0)
return;
@@ -280,14 +286,17 @@ struct Sprite {
x + width, y, // Position 3
tex_x2, tex_y1 // TexCoord 3
};
GLfloat color[] = { r, g, b, a, r, g, b, a, r, g, b, a, r, g, b, a };
// Load the vertex position
glVertexAttribPointer( 0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof ( GLfloat ), coords );
// Load the texture coordinate
glVertexAttribPointer( 1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof ( GLfloat ), &coords[2] );
glVertexAttribPointer( 2, 4, GL_FLOAT, GL_FALSE, 0, color );
glEnableVertexAttribArray( 0 );
glEnableVertexAttribArray( 1 );
glEnableVertexAttribArray( 2 );
glActiveTexture( GL_TEXTURE0 );
glBindTexture( GL_TEXTURE_2D, texture );
@@ -302,6 +311,16 @@ struct Sprite {
draw(x, y, w, h);
}
void drawColor(GLfloat x, GLfloat y, GLfloat width, GLfloat height, GLfloat r, GLfloat g, GLfloat b, GLfloat a)
{
draw(x, y, width, height, 0.0f, 0.0f, 1.0f, 1.0f, r, g, b, a);
}
void drawColor(GLfloat x, GLfloat y, GLfloat r, GLfloat g, GLfloat b, GLfloat a)
{
drawColor(x, y, w, h, r, g, b, a);
}
GLuint texture;
int w, h;
std::string imagePath;
@@ -340,11 +359,7 @@ main(int argc, char *argv[])
coords[0][0] / sprites[5].w * 3 + (float) screenWidth / sprites[5].w,
coords[0][0] / sprites[5].h * 2 + (float) screenHeight / sprites[5].h);
int mouseX = 0, mouseY = 0, buttons = 0;
buttons = SDL_GetMouseState(&mouseX, &mouseY);
sprites[0].draw(mouseX - sprites[0].w/2, mouseY - sprites[0].h/2);
sprites[1].draw(coords[0][0], coords[0][1]);
sprites[1].drawColor(coords[0][0], coords[0][1], pulse, pulse, 1.0f - pulse, 1.0f);
sprites[2].draw(coords[1][0], coords[1][1], sprites[2].w * pulse * 4, sprites[2].h * pulse * 4);
sprites[3].draw(coords[2][0], coords[2][1], sprites[3].w * pulse * 4, sprites[3].h * 2);
sprites[4].draw(coords[3][0], coords[3][1], sprites[4].w, sprites[4].h * pulse * 2);
@@ -355,6 +370,10 @@ main(int argc, char *argv[])
sprites[1].draw(0 - sprites[1].w / 2.0f, screenHeight - sprites[1].h / 2.0f);
sprites[1].draw(screenWidth - sprites[1].w / 2.0f, 0 - sprites[1].h / 2.0f);
int mouseX = 0, mouseY = 0, buttons = 0;
buttons = SDL_GetMouseState(&mouseX, &mouseY);
sprites[0].drawColor(mouseX - sprites[0].w/2, mouseY - sprites[0].h/2, 1.0f, 1.0f, 1.0f, pulse);
SDL_GL_SwapBuffers();
SDL_Event event;
while( SDL_PollEvent(&event) )
@@ -369,7 +388,7 @@ main(int argc, char *argv[])
if(event.type == SDL_KEYUP || event.type == SDL_KEYDOWN)
{
__android_log_print(ANDROID_LOG_INFO, "Hello", "SDL key event: evt %s state %s key %4d %12s scancode %4d mod %2d unicode %d", event.type == SDL_KEYUP ? "UP " : "DOWN" , event.key.state == SDL_PRESSED ? "PRESSED " : "RELEASED", (int)event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym), (int)event.key.keysym.scancode, (int)event.key.keysym.mod, (int)event.key.keysym.unicode);
printf("SDL key event: evt %s state %s key %4d %12s scancode %4d mod %2d unicode %d", event.type == SDL_KEYUP ? "UP " : "DOWN" , event.key.state == SDL_PRESSED ? "PRESSED " : "RELEASED", (int)event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym), (int)event.key.keysym.scancode, (int)event.key.keysym.mod, (int)event.key.keysym.unicode);
if(event.key.keysym.sym == SDLK_ESCAPE)
return 0;
}