pandory500/SDL-mirror
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Fixed orientation and color when rendering to texture

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This commit is contained in:
Sam Lantinga 2012-06-22 11:38:49 -04:00
parent e064340717
commit 6cd1ae105e
1 changed files with 74 additions and 62 deletions
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66
src/render/opengles2/SDL_render_gles2.c
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@ -906,15 +906,23 @@ GLES2_SetOrthographicProjection(SDL_Renderer *renderer)
projection[0][2] = 0.0f; projection[0][2] = 0.0f;
projection[0][3] = 0.0f; projection[0][3] = 0.0f;
projection[1][0] = 0.0f; projection[1][0] = 0.0f;
if (renderer->target) {
projection[1][1] = 2.0f / renderer->viewport.h;
} else {
projection[1][1] = -2.0f / renderer->viewport.h; projection[1][1] = -2.0f / renderer->viewport.h;
}
projection[1][2] = 0.0f; projection[1][2] = 0.0f;
projection[1][3] = 0.0f; projection[1][3] = 0.0f;
projection[2][0] = 0.0f; projection[2][0] = 0.0f;
projection[2][1] = 0.0f; projection[2][1] = 0.0f;
projection[2][2] = 1.0f; projection[2][2] = 0.0f;
projection[2][3] = 0.0f; projection[2][3] = 0.0f;
projection[3][0] = -1.0f; projection[3][0] = -1.0f;
if (renderer->target) {
projection[3][1] = -1.0f;
} else {
projection[3][1] = 1.0f; projection[3][1] = 1.0f;
}
projection[3][2] = 0.0f; projection[3][2] = 0.0f;
projection[3][3] = 1.0f; projection[3][3] = 1.0f;
@ -1027,11 +1035,21 @@ GLES2_SetDrawingState(SDL_Renderer * renderer)
/* Select the color to draw with */ /* Select the color to draw with */
locColor = rdata->current_program->uniform_locations[GLES2_UNIFORM_COLOR]; locColor = rdata->current_program->uniform_locations[GLES2_UNIFORM_COLOR];
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locColor,
renderer->b * inv255f,
renderer->g * inv255f,
renderer->r * inv255f,
renderer->a * inv255f);
} else {
rdata->glUniform4f(locColor, rdata->glUniform4f(locColor,
renderer->r * inv255f, renderer->r * inv255f,
renderer->g * inv255f, renderer->g * inv255f,
renderer->b * inv255f, renderer->b * inv255f,
renderer->a * inv255f); renderer->a * inv255f);
}
return 0; return 0;
} }
@ -1254,11 +1272,21 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
/* Configure color modulation */ /* Configure color modulation */
locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION]; locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION];
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locModulation,
texture->b * inv255f,
texture->g * inv255f,
texture->r * inv255f,
texture->a * inv255f);
} else {
rdata->glUniform4f(locModulation, rdata->glUniform4f(locModulation,
texture->r * inv255f, texture->r * inv255f,
texture->g * inv255f, texture->g * inv255f,
texture->b * inv255f, texture->b * inv255f,
texture->a * inv255f); texture->a * inv255f);
}
/* Configure texture blending */ /* Configure texture blending */
GLES2_SetBlendMode(rdata, blendMode); GLES2_SetBlendMode(rdata, blendMode);
@ -1266,18 +1294,6 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
GLES2_SetTexCoords(rdata, SDL_TRUE); GLES2_SetTexCoords(rdata, SDL_TRUE);
/* Emit the textured quad */ /* Emit the textured quad */
if (renderer->target) {
// Flip the texture vertically to compensate for the inversion it'll be subjected to later when it's rendered to the screen
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
}
else {
vertices[0] = (GLfloat)dstrect->x; vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y; vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w); vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
@ -1286,7 +1302,6 @@ GLES2_RenderCopy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *s
vertices[5] = (GLfloat)(dstrect->y + dstrect->h); vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w); vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h); vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
}
rdata->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices); rdata->glVertexAttribPointer(GLES2_ATTRIBUTE_POSITION, 2, GL_FLOAT, GL_FALSE, 0, vertices);
texCoords[0] = srcrect->x / (GLfloat)texture->w; texCoords[0] = srcrect->x / (GLfloat)texture->w;
texCoords[1] = srcrect->y / (GLfloat)texture->h; texCoords[1] = srcrect->y / (GLfloat)texture->h;
@ -1423,11 +1438,21 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
/* Configure color modulation */ /* Configure color modulation */
locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION]; locModulation = rdata->current_program->uniform_locations[GLES2_UNIFORM_MODULATION];
if (renderer->target &&
(renderer->target->format == SDL_PIXELFORMAT_ARGB8888 ||
renderer->target->format == SDL_PIXELFORMAT_RGB888)) {
rdata->glUniform4f(locModulation,
texture->b * inv255f,
texture->g * inv255f,
texture->r * inv255f,
texture->a * inv255f);
} else {
rdata->glUniform4f(locModulation, rdata->glUniform4f(locModulation,
texture->r * inv255f, texture->r * inv255f,
texture->g * inv255f, texture->g * inv255f,
texture->b * inv255f, texture->b * inv255f,
texture->a * inv255f); texture->a * inv255f);
}
/* Configure texture blending */ /* Configure texture blending */
GLES2_SetBlendMode(rdata, blendMode); GLES2_SetBlendMode(rdata, blendMode);
@ -1435,18 +1460,6 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
GLES2_SetTexCoords(rdata, SDL_TRUE); GLES2_SetTexCoords(rdata, SDL_TRUE);
/* Emit the textured quad */ /* Emit the textured quad */
if (renderer->target) {
// Flip the texture vertically to compensate for the inversion it'll be subjected to later when it's rendered to the screen
vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
vertices[3] = (GLfloat)renderer->viewport.h-dstrect->y;
vertices[4] = (GLfloat)dstrect->x;
vertices[5] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)renderer->viewport.h-(dstrect->y + dstrect->h);
}
else {
vertices[0] = (GLfloat)dstrect->x; vertices[0] = (GLfloat)dstrect->x;
vertices[1] = (GLfloat)dstrect->y; vertices[1] = (GLfloat)dstrect->y;
vertices[2] = (GLfloat)(dstrect->x + dstrect->w); vertices[2] = (GLfloat)(dstrect->x + dstrect->w);
@ -1455,7 +1468,6 @@ GLES2_RenderCopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect
vertices[5] = (GLfloat)(dstrect->y + dstrect->h); vertices[5] = (GLfloat)(dstrect->y + dstrect->h);
vertices[6] = (GLfloat)(dstrect->x + dstrect->w); vertices[6] = (GLfloat)(dstrect->x + dstrect->w);
vertices[7] = (GLfloat)(dstrect->y + dstrect->h); vertices[7] = (GLfloat)(dstrect->y + dstrect->h);
}
if (flip & SDL_FLIP_HORIZONTAL) { if (flip & SDL_FLIP_HORIZONTAL) {
tmp = vertices[0]; tmp = vertices[0];
vertices[0] = vertices[4] = vertices[2]; vertices[0] = vertices[4] = vertices[2];